60+ Ways to Say I Don’t Think So With 180+ Example Sentences

"I don’t think so" is used in two ways. Said flat, it is a soft no with room for doubt. With stress on "think", it is a firm refusal: "I don’t THINK so!" to a friend who wants your car. The other ways to say I don’t think so split along the same line, from a gentle "I doubt it" to a hard "not a chance". The soft forms come first.

Common Ways to Say I Don’t Think So in Everyday English

These five phrases are the everyday soft forms, and each one fits a neighbour, a colleague, or a family member without sounding cold.

I doubt it: the most common reply when you expect the answer to be no but cannot be certain. It fits a question about the weather, a delay, or a plan, and it goes with a short reason.

• Will Dad be home before seven? I doubt it, he said the meeting runs late.
• I doubt it, the bakery closes at four on Saturdays.
• Is there still a seat on the two o’clock coach? I doubt it, but I’ll ask at the desk.

I don’t believe so: a calm, neutral form that works with anyone, at home or at work. It means you are fairly sure the answer is no.

• Has the parcel arrived yet? I don’t believe so, the hall table is empty.
• I don’t believe so, but let me check the calendar to be sure.
• Did anyone from the school ring today? I don’t believe so, love.

Not really: a soft no that fits a question about your feelings, your plans, or your knowledge. It never means "yes, a little".

• Do you fancy pizza again tonight? Not really, we had it twice this week.
• Not really, I only know the first verse of that song.
• Are you worried about the test? Not really, I revised most of the chapters.

I’m not sure about that: a polite way to say that you doubt what someone just said, without calling the person wrong. The reply is a reason or a question.

• I’m not sure about that, the sign said the museum shuts on Mondays.
• He says the flat comes with parking, but I’m not sure about that.
• I’m not sure about that, Grandad, the shop moved to the high street years ago.

Not as far as I know: a form for a fact that you have not heard about, so the doubt is about your knowledge, not the other person.

• Has the meeting been moved? Not as far as I know, it’s still at ten.
• Not as far as I know, but Priya handles the bookings, so ask her.
• Is the pool open in winter? Not as far as I know, it’s outdoors.

Say "I doubt it" for a fact you cannot check, and "not really" when the question is about you.

Casual Ways to Say I Don’t Think So to Friends

With friends the soft no gets shorter, and a one-word form with a shrug is the normal reply.

Nah: the casual "no" in speech and in texts, and it fits a friend or a sibling. To a stranger or a manager it sounds careless.

• Coming to the gym later? Nah, my legs are still sore from Tuesday.
• Nah, I’ve seen that film, the ending’s rubbish.
• Want the last biscuit? Nah, you have it.

Doubt it: "I doubt it" without the "I", and it fits a quick reply between friends about a plan or a result.

• Think they’ll win tonight? Doubt it, half the team’s injured.
• Doubt it, Sam never gets up before eleven on a Sunday.
• Will the bus be on time? Doubt it, it’s pouring.

Don’t think so: the short spoken form of the phrase itself, said with a small shake of the head.

• Is Leo still in the library? Don’t think so, his bag’s gone.
• Don’t think so, mate, that shop went bust last year.
• Did we leave the heating on? Don’t think so, I turned it off at the wall.

Nope: a light, friendly "no" with a small pop at the end, and it fits a friend, a partner, or a child.

• Any milk left? Nope, I’ll grab some on the way back.
• Nope, I haven’t heard from Dana since Friday.
• Did you remember the tickets? Nope. Sorry. Turning round now.

I wouldn’t bet on it: a playful form that means "I strongly doubt it", and it fits a friend’s hopeful plan.

• Jess says she’ll be ready by eight. I wouldn’t bet on it.
• I wouldn’t bet on it, the forecast says rain all weekend.
• Think the boss will let us finish early? I wouldn’t bet on it.

Keep "nah" and "nope" for friends, and use "I don’t believe so" with everyone else.

Polite Ways to Say I Don’t Think So at Work

At work the soft no gets a reason or a softener in front of it, and the phrase never sounds like a challenge to the other person.

I’m afraid not: the standard polite refusal in British and American offices, and it fits a request, a question, or a hope. "I’m afraid" softens the "not".

• Is there any budget left for training this year? I’m afraid not, it went on the new laptops.
• I’m afraid not, the contract has to be signed in person.
• Can we push the deadline to Friday? I’m afraid not, the client presents on Thursday.

I’m not convinced: a polite way to doubt a plan or a claim in a meeting, and the reply is a reason.

• I’m not convinced the new supplier can deliver by March.
• The numbers look good, but I’m not convinced they cover the shipping costs.
• I’m not convinced, to be honest, the sample size was tiny.

That’s not my understanding: a formal way to say that you heard something different, and it fits a fact about a rule, a date, or a decision.

• That’s not my understanding, the policy says two weeks’ notice, not one.
• She said the office closes at five, but that’s not my understanding.
• That’s not my understanding of the agreement, so let’s check the email.

I’d have to disagree there: a polite disagreement with one point, and "there" keeps it small.

• I’d have to disagree there, the old logo tested better with customers.
• I’d have to disagree there, Tom, the delay came from our side.
• It’s a fair plan, but I’d have to disagree there on the timing.

I see it differently: a soft way to disagree that gives your own view without calling the other view wrong.

• I see it differently, the risk is in the launch date, not the price.
• I see it differently, but I’d like to hear the rest of your plan first.
• With respect, I see it differently, and here’s why.

A soft no is spoken at one of five levels, and the table sorts them.

One trap at work is a bare "nah" or "nope" in reply to a manager, because it sounds like a shrug.

• Can you cover the front desk at lunch? Nope, busy. (to a manager) ❌

A one-word slang refusal to a senior person sounds rude, and "I’m afraid not" with a reason fits the same moment.

• Can you cover the front desk at lunch? I’m afraid not, I have a client call at one. ✅

Write "I’m afraid not" for a refusal and "I’m not convinced" for a doubt, and give a reason with both.

Ways to Say I Don’t Think So in an Email

An email soft no needs a full sentence, because the reader cannot hear your voice, and a reason on the same line keeps it polite.

Unfortunately, that won’t be possible: the standard written refusal for a request, and it fits a client, a customer, or a colleague you do not know well.

• Unfortunately, that won’t be possible this week, as the team is at the trade fair.
• Thank you for asking. Unfortunately, that won’t be possible before the audit ends.
• Unfortunately, that won’t be possible, but I can offer a call on Monday instead.

I don’t believe that’s correct: a polite written way to say that a fact in the email is wrong, and it goes with the right fact in the next line.

• I don’t believe that’s correct, the invoice was paid on 3 May.
• I don’t believe that’s correct, as the booking was for two rooms, not one.
• With respect, I don’t believe that’s correct, and I have attached the original order.

I’m not sure that would work: a soft way to doubt a plan in writing, and it opens the door to a better plan.

• I’m not sure that would work, since half the team is remote on Fridays.
• Thanks for the idea. I’m not sure that would work with the current budget, though.
• I’m not sure that would work, but a shorter session on the same day would.

I’d rather not, if that’s all right: a polite personal refusal in writing, and it fits a favour or a change you do not want.

• I’d rather not, if that’s all right, as I’m already covering two shifts that week.
• I’d rather not, if that’s all right, but Priya has offered to take the slot.
• Thank you for thinking of me. I’d rather not, if that’s all right.

A plain "I don’t think so" on its own line in a formal email reads as cold.

• Dear Mr Osei, I don’t think so. Regards, Ana. ❌

A written refusal to a customer needs a softener and a reason, so "I’m afraid" plus the fact fits.

• Dear Mr Osei, I’m afraid that won’t be possible, as the offer ended on 30 June. Regards, Ana. ✅

Write "unfortunately, that won’t be possible" for a request and "I don’t believe that’s correct" for a wrong fact.

Ways to Say I Don’t Think So About a Fact

When the question is about a fact, the soft no says how sure you are, and each phrase marks a different amount of doubt.

That doesn’t sound right: a gentle way to doubt a number, a date, or a story, and it means "check it again".

• Forty pounds for a return ticket? That doesn’t sound right.
• That doesn’t sound right, the match was on Saturday, not Sunday.
• That doesn’t sound right, Mum, the doctor said two tablets, not four.

I’m not sure that’s true: a polite doubt about a claim, and it fits a friend, a classmate, or a colleague.

• I’m not sure that’s true, spiders aren’t insects.
• He says the bridge is the longest in Europe, but I’m not sure that’s true.
• I’m not sure that’s true any more, the rules changed last year.

Unlikely: a one-word answer that means "I doubt it", and it fits speech and writing at every level.

• Will the parcel come today? Unlikely, it only left the depot this morning.
• Unlikely, the last train was at eleven.
• Any chance of a refund? Unlikely, but the form is worth a try.

Use "unlikely" when you are fairly sure and "that doesn’t sound right" when you want the other person to check.

Ways to Say I Don’t Think So to a Request

A soft no to a request refuses the favour and not the person, so each phrase leaves the friendship or the working relationship as it was.

I’d rather not: the polite personal refusal, and it means you do not want to, without a long reason.

• Can you sing at the wedding? I’d rather not, I get so nervous.
• I’d rather not lend the car again, the last time cost me a tyre.
• Would you speak first? I’d rather not, could Maya open?

Not this time: a refusal that keeps the door open for the next request, and it fits a friend or a colleague.

• Can you chip in for the gift? Not this time, I’m short until payday.
• Not this time, but ask me again next month.
• Want to swap shifts? Not this time, sorry, I’ve got the dentist.

I’ll pass: a short, relaxed refusal for an offer or a favour, and it fits friends and relaxed colleagues.

• Another slice? I’ll pass, thanks, I’m full.
• I’ll pass on the meeting notes, Dan has already sent them.
• Fancy joining the pub quiz team? I’ll pass, I’m hopeless at sport questions.

That won’t work for me: a firm but polite refusal of a time, a price, or a plan, and it fits a customer or a colleague.

• Can we meet at seven in the morning? That won’t work for me, the school run is at eight.
• That won’t work for me, the price has gone up twice since May.
• A delivery on Sunday? That won’t work for me, I’m away all weekend.

Say "I’d rather not" for a favour you dislike, and "not this time" for one you would do another day.

Ways to Say I Don’t Think So to an Invitation

A soft no to an invitation thanks the person first, and the refusal comes with a reason or a promise for next time.

I don’t think I can make it: the standard polite refusal of an invitation, and it fits a party, a dinner, or a meeting.

• Thanks for the invite, but I don’t think I can make it on Saturday.
• I don’t think I can make it, the babysitter’s cancelled.
• I don’t think I can make it to the launch, I’m in Leeds that day.

I’ll have to pass: a friendly refusal that means "not this time", and it fits colleagues and friends.

• Drinks after work? I’ll have to pass, early start tomorrow.
• I’ll have to pass on the barbecue, we’ve got my in-laws over.
• Thanks, but I’ll have to pass this week.

Maybe another time: a refusal with a promise in it, and it fits a friend you want to see again.

• Cinema tonight? Maybe another time, I’ve got an essay due.
• Maybe another time, I’m shattered after the drive.
• I’d love to, but not this weekend. Maybe another time?

I’m going to sit this one out: a relaxed refusal for a game, a trip, or a night out, and it fits a group of friends.

• Karaoke? I’m going to sit this one out, my voice is gone.
• I’m going to sit this one out, you lot go ahead.
• Thanks, but I’m going to sit this one out, I’ve been out three nights running.

Say "I don’t think I can make it" to anyone, and keep "I’m going to sit this one out" for friends.

Firm and Sarcastic Ways to Say I Don’t Think So

Stress on "think" turns the soft phrase into a refusal with a laugh in it, and these phrases are its close relatives, so use them with friends or with someone who has gone too far.

I don’t THINK so!: the phrase said with a strong stress on "think", and it means "absolutely not". It fits a friend’s cheeky request or a stranger who has crossed a line.

• You want to borrow my car for the weekend? I don’t THINK so!
• Leave the dishes for me again? I don’t THINK so, it’s your turn.
• Push in front of me in the queue? I don’t THINK so, mate.

Not a chance: a firm refusal that means "there is no possibility", and it fits speech between friends or family.

• Will you lend him money again? Not a chance.
• Not a chance, I’m not driving three hours for a two-hour party.
• Think the landlord will lower the rent? Not a chance.

No way: the most common firm refusal in casual English, and it also means "I can’t believe it" when it is surprise, not refusal.

• Swim in the lake in January? No way.
• No way am I wearing that to the wedding.
• He’s asked for a raise after two weeks? No way.

Yeah, right: a sarcastic reply that means "I do not believe you", said with a flat voice. Keep it for friends who know you are joking.

• You’ll have the essay done by tonight? Yeah, right.
• Yeah, right, and I’m the Queen of Sheba.
• Cheap flights in August? Yeah, right.

As if: a sarcastic form that means "that will never happen", and it fits young speakers and close friends.

• Him, tidy his room? As if.
• As if I’d miss your birthday.
• She thinks I’ll cover her shift again. As if.

I think not: the older, mock-formal refusal, and it sounds dry and a little theatrical. It fits a joke or a firm written no.

• Another slice for the dog? I think not.
• I think not, sir, the museum closes in five minutes.
• Sell the family piano to pay for a jet ski? I think not.

The stressed form of the phrase catches learners out in a work setting.

• Can the report wait until Monday? I don’t THINK so! (to a client) ❌

Stress on "think" turns the phrase into a sarcastic refusal, so a client hears mockery, and the flat form with a reason fits.

• Can the report wait until Monday? I don’t think so, the board meets on Friday. ✅

Say "not a chance" when the answer is final, and keep "yeah, right" and "as if" for friends.

Ways to Say I Don’t Think So in a Text

A text soft no is two or three words, and a full stop or a short letter form replaces your voice.

nah: the default text no between friends, and it reads as relaxed rather than rude.

• nah, too tired, tomorrow?
• nah I’m still at work, go without me
• Is the cafe open? nah, closed Mondays

don’t think so: the phrase without "I", and it fits a text about a fact or a plan.

• Did Ali book the room? don’t think so, ask him
• don’t think so, the gate said 7, not 9
• Any parking near the venue? don’t think so, get the tram

doubt it: the text form for a prediction, and it reads as a shrug.

• Think it’ll stop raining? doubt it
• doubt it, she’s not replied all day
• Will Dan turn up? doubt it, he’s got a cold

idts: the short letter form of "I don’t think so", used only between close friends in a fast chat.

• Are we still on for six? idts, Rob’s stuck at work
• idts, the shop shuts at five
• Is this the right bus? idts, check the number

not really: the soft no for a question about your mood or your plans in a text, and it leaves room for another question.

• Fancy a run later? not really, legs are dead
• not really feeling it tonight, sorry
• Enjoying the book? not really, it’s slow

Keep a text refusal to three words, and add a reason when the other person made a plan.

Ways to Say I Don’t Think So to a Group

A soft no to a group doubts the plan and not the people, so each phrase names the idea and leaves the room open to a better one.

I’m not sure we’re there yet: a polite way to say that a group plan is not ready, and it fits a meeting or a team chat.

• I’m not sure we’re there yet on the pricing, so let’s park the launch.
• I’m not sure we’re there yet, the test results only came in this morning.
• Good draft, but I’m not sure we’re there yet with the opening page.

Can I push back on that?: a polite question that asks permission to disagree, and it fits a meeting with a manager in the room.

• Can I push back on that? The last time we cut testing, the app crashed.
• Can I push back on that? Two weeks is not enough for translation.
• Can I push back on that a little? I think the smaller venue is safer.

I’m not sold on this: a casual work phrase that means "I am not convinced", and it fits a relaxed team.

• I’m not sold on this colour for the poster, it’s hard to read.
• I’m not sold on this, but I’m happy to be persuaded.
• Honestly, I’m not sold on this plan, the timing’s off.

Let’s not: a short refusal of a group idea, and it fits friends, family, or a close team.

• Another karaoke night? Let’s not, my ears are still ringing.
• Let’s not book anything until the flights are confirmed.
• Split the bill fifty ways? Let’s not, I’ll get it and you can transfer.

I have a different view: the formal way to disagree in front of a group, and it fits a board, a class, or a client meeting.

• I have a different view on the deadline, and I’d like to explain why.
• I have a different view, the survey only covered two cities.
• With respect, I have a different view of what the customers asked for.

Say "I’m not sure we’re there yet" in a meeting, and keep "let’s not" for people you know well.

Regional Ways to Say I Don’t Think So in English

English-speaking countries each keep a few soft and firm refusals of their own, and the right one in the right place sounds native at once.

British Ways to Say I Don’t Think So

I shouldn’t think so: the British form of "I don’t think so", used for a fact or a prediction, and it sounds polite and a little old-fashioned.

• Will the post come before nine? I shouldn’t think so, not on a bank holiday.
• I shouldn’t think so, the library shuts early on Fridays.
• Is the pub still doing food? I shouldn’t think so, it’s gone ten.

I very much doubt it: a polite, formal British form of "I doubt it", and it fits a shop, an office, or a phone call.

• Will there be tickets on the door? I very much doubt it, it sold out in June.
• I very much doubt it, the manager left for the day at five.
• Can the plumber come today? I very much doubt it, but I’ll ring him.

Not on your nelly: an old British joke refusal that means "not on your life", and it fits family and old friends.

• Wear a tie to the barbecue? Not on your nelly.
• Not on your nelly, I’m not eating that.
• Let the kids drive the tractor? Not on your nelly, said Grandad.

American Ways to Say I Don’t Think So

Nah, I’m good: the American casual refusal of an offer, and "I’m good" means "no, thank you".

• Want a refill? Nah, I’m good, thanks.
• Nah, I’m good, I ate before I came.
• Need a ride home? Nah, I’m good, it’s two blocks.

Not gonna happen: a firm, casual American refusal, and it fits a friend’s plan or a customer who asks for too much.

• Free shipping to Alaska? Not gonna happen.
• Not gonna happen, I’m not waking up at four for a sale.
• You want the deposit back after cancelling twice? Not gonna happen.

Yeah, no: an American reply that starts as a yes and ends as a no, and it means "I hear you, but no".

• Try the hot sauce? Yeah, no, I’m still recovering from last time.
• Yeah, no, I’m not driving in that snow.
• Join the six a.m. run club? Yeah, no.

Australian and Irish Ways to Say I Don’t Think So

Yeah, nah: the Australian form of "yeah, no", said in one breath, and it fits friends and workmates.

• Beach after work? Yeah, nah, it’s blowing a gale.
• Yeah, nah, I’ll give the party a miss, mate.
• Reckon they’ll finish the road by Christmas? Yeah, nah.

I doubt it, mate: "I doubt it" with the Australian "mate", and it fits anyone you speak to casually.

• Will the surf be up tomorrow? I doubt it, mate, the wind’s wrong.
• I doubt it, mate, the servo shuts at nine out here.
• Any tickets left for the final? I doubt it, mate.

Not a hope: the Irish firm refusal that means "no chance", and it fits friends and family.

• Will Dad let you take the van? Not a hope.
• Not a hope, the match is sold out.
• Think she’ll say yes? Not a hope, lad, she’s seen your car.

Ah, I don’t know about that: an Irish soft doubt, said slowly, and it means "I doubt what you just said".

• Best pub in Galway? Ah, I don’t know about that.
• Ah, I don’t know about that, the roads were fine last winter.
• He says he ran it in three hours. Ah, I don’t know about that.

Say "I shouldn’t think so" in Britain, "nah, I’m good" in America, "yeah, nah" in Australia, and "not a hope" in Ireland.

Slang Ways to Say I Don’t Think So

Slang refusals are for close friends of your own age, and each one sounds wrong in a message that an older person or a manager will read.

Hard no: a firm refusal in two words, and it means "no, and I will not change my mind".

• Share a room with your cousin at the festival? Hard no.
• That’s a hard no from me on the karaoke.
• Pineapple on pizza? Hard no.

Not happening: a casual refusal that sounds final, and it fits friends and family.

• Me, cook for twelve people? Not happening.
• Not happening, I’m not going out in that rain.
• Can I borrow your good headphones? Not happening, sorry.

Use slang refusals with friends your own age only, and switch to "I’m afraid not" for anyone else.

Funny Ways to Say I Don’t Think So

Funny refusals make the "no" into a joke, and each one works only with people who know your sense of humour.

When pigs fly: a joke refusal that means "never", and it fits a plan that will never happen.

• You’ll clean the garage this weekend? When pigs fly.
• When pigs fly, said Nan, when we asked her to try sushi.
• Dad, giving up his old armchair? When pigs fly.

Over my dead body: a dramatic refusal that means "I will stop this at any cost", said with a smile among family and friends.

• Paint the kitchen orange? Over my dead body.
• Over my dead body are you taking the dog to the pub.
• Sell Grandma’s clock? Over my dead body.

In your dreams: a teasing refusal for a friend’s hopeful idea, and it fits siblings and close friends.

• Think you’ll beat me at chess? In your dreams.
• Borrow my new bike? In your dreams.
• In your dreams, you haven’t scored all season.

Save the joke refusals for people who will laugh, because "over my dead body" to a customer reads as a threat.

How Do You Reply When Someone Says I Don’t Think So?

A soft no asks for a small next step from you, so the reply either accepts the answer, asks for the reason, or offers a second plan.

Accept a soft no about a fact: the reply is "okay" or "fair enough", and a thank you if the person checked for you.

• Is the shop open on Sunday? I don’t think so. Okay, I’ll go on Monday then.
• Has the parcel come? I don’t believe so. Fair enough, thanks for looking.
• Will the train be on time? I doubt it. Right, I’ll leave a bit earlier.

Ask for the reason: the reply is "why not?" or "what makes you say that?", said gently.

• I’m not convinced this plan works. What makes you say that?
• I don’t think so. Why not? The last one went well.
• I have my doubts. Which part worries you?

Offer a second plan: the reply accepts the no and offers something smaller or later.

• I don’t think I can make it Saturday. No problem, how about Sunday lunch?
• I’d rather not sing. That’s fine, could you read a poem instead?
• That won’t work for me. Understood, would eight thirty be better?

Reply to a firm or sarcastic no: the reply is a laugh and a step back, because the other person has made the answer final.

• Borrow the car? I don’t THINK so! Fair enough, I’ll get the bus.
• Not a chance. Okay, okay, I had to ask.
• Yeah, right. I mean it, I’ll have it done by ten.

Reply to a text no: the reply is short and warm, and it names the next time.

• nah, too tired. no worries, next week?
• doubt it. ok, I’ll ask Sam instead
• idts. cool, thanks anyway

Accept a soft no in three words, ask "why not?" only when you can change something, and never argue with a firm one.

More Everyday English Phrases

• Other Ways to Say I Think So
• Other Ways to Say I Understand
• Other Ways to Say I Disagree
• Other Ways to Say I Agree

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