100 Prefix Words List

Learning prefix words is essential for building strong English vocabulary skills, especially for students and language learners. This 100 Prefix Words List helps you understand how common prefixes—like un-, re-, and pre-—change word meanings. By mastering prefixes, you improve word recognition, spelling, and reading fluency. This guide supports academic success, aligns with curriculum standards, and aids in exam prep. Related terms include root words, morphemes, and affixes. Learn faster with this clear, structured list built for both SEO and student learning needs.

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200 Prefix Words List

Serial	Prefix	Meaning	Examples
1.	Un-	Not; opposite of	Unhappy, untidy, unfair, unsure, unkind
2.	Re-	Again; back	Reread, rebuild, recover, revisit, rewrite
3.	Dis-	Not; opposite of	Dislike, disconnect, disagree, disapprove
4.	In-	Not; into	Invisible, incomplete, inhale, invade
5.	Pre-	Before; prior to	Preheat, prepay, preview, pretest,
6.	Mis-	Wrong; incorrect	Misbehave, mislead, misplace, misprint
7.	Over-	Excessive; too much	Overcome, overlook, overeat, overreact
8.	Inter-	Between; among	Interact, interfere, interconnect,
9.	Sub-	Under; below	Submerge, subside, subzero, subtitle
10.	Super-	Above; beyond	Supersize, superhero, supernatural
11.	Semi-	Half; partly	Semifinal, semiannual, semicolon,
12.	Multi-	Many; much	Multiply, multitask, multifunctional
13.	Anti-	Against; opposite of	Antisocial, antiwar, antibiotic,
14.	Micro-	Small; minute	Microscope, microwave, microorganism
15.	Auto-	Self; own	Autograph, automatic, autobiography
16.	Post-	After; later	Postpone, postwar, postscript,
17.	Pre-	Before; prior to	Preschool, prepare, prevent, preside
18.	Neo-	New; recent	Neolithic, neoclassical, neo-Nazi
19.	Ex-	Former; out of	Ex-wife, ex-president, ex-convict
20.	Co-	Together; joint	Coexist, cooperate, coauthor,
21.	De-	Opposite of; remove	Defrost, defuse, devalue, deactivate,
22.	Semi-	Half; partly	Semifinal, semiannual, semicolon,
23.	Multi-	Many; much	Multiply, multitask, multifunctional,
24.	Anti-	Against; opposite of	Antisocial, antiwar, antibiotic,
25.	Micro-	Small; minute	Microscope, microwave, microorganism,
26.	Auto-	Self; own	Autograph, automatic, autobiography,
27.	Post-	After; later	Postpone, postwar, postscript,
28.	Pre-	Before; prior to	Preschool, prepare, prevent, preside,
29.	Neo-	New; recent	Neolithic, neoclassical, neo-Nazi,
30.	Ex-	Former; out of	Ex-wife, ex-president, ex-convict,
31.	Co-	Together; joint	Coexist, cooperate, coauthor,
32.	Fore-	Before; in advance	Foresee, forecast, forehead, forearm,
33.	Trans-	Across; beyond	Transfer, transform, transatlantic,
34.	Under-	Below; insufficient	Underestimate, underground, undergo,
35.	Hyper-	Excessive; beyond	Hyperactive, hypersensitive,
36.	Mega-	Great; million	Megabyte, megaphone, megalith,
37.	Mini-	Small; miniature	Minibus, miniskirt, minivan,
38.	Out-	Beyond; out of	Outshine, outgrow, outlive, outfield,
39.	Up-	Higher; increased	Uplift, upgrade, upturn, upstairs,
40.	Down-	Lower; decreased	Downsize, downturn, downgrade, downfall
41.	Hyper-	Excessive; beyond	Hyperactive, hypersensitive, hyperbole,
42.	Mega-	Great; million	Megabyte, megaphone, megalith,
43.	Mini-	Small; miniature	Minibus, miniskirt, minivan,
44.	Out-	Beyond; out of	Outshine, outgrow, outlive, outfield,
45.	Up-	Higher; increased	Uplift, upgrade, upturn, upstairs,
46.	Down-	Lower; decreased	Downsize, downturn, downgrade, downfall,
47.	Mid-	Middle; halfway	Midnight, midpoint, midyear, midway,
48.	Fore-	Before; in advance	Foresee, forecast, forehead, forearm,
49.	Trans-	Across; beyond	Transfer, transform, transatlantic,
50.	Under-	Below; insufficient	Underestimate, underground, undergo,
51.	Semi-	Half; partly	Semifinal, semiannual, semicolon,
52.	Multi-	Many; much	Multiply, multitask, multifunctional,
53.	Anti-	Against; opposite of	Antisocial, antiwar, antibiotic,
54.	Micro-	Small; minute	Microscope, microwave, microorganism,
55.	Auto-	Self; own	Autograph, automatic, autobiography,
56.	Post-	After; later	Postpone, postwar, postscript,
57.	Pre-	Before; prior to	Preschool, prepare, prevent, preside,
58.	Neo-	New; recent	Neolithic, neoclassical, neo-Nazi,
59.	Ex-	Former; out of	Ex-wife, ex-president, ex-convict,
60.	Co-	Together; joint	Coexist, cooperate, coauthor,
61.	Fore-	Before; in advance	Foresee, forecast, forehead, forearm,
62.	Trans-	Across; beyond	Transfer, transform, transatlantic,
63.	Under-	Below; insufficient	Underestimate, underground, undergo,
64.	Hyper-	Excessive; beyond	Hyperactive, hypersensitive, hyperbole,
65.	Mega-	Great; million	Megabyte, megaphone, megalith,
66.	Mini-	Small; miniature	Minibus, miniskirt, minivan,
67.	Out-	Beyond; out of	Outshine, outgrow, outlive, outfield,
68.	Up-	Higher; increased	Uplift, upgrade, upturn, upstairs,
69.	Down-	Lower; decreased	Downsize, downturn, downgrade, downfall,
70.	Mid-	Middle; halfway	Midnight, midpoint, midyear, midway,
71.	Fore-	Before; in advance	Foresee, forecast, forehead, forearm,
72.	Trans-	Across; beyond	Transfer, transform, transatlantic,
73.	Under-	Below; insufficient	Underestimate, underground, undergo,
74.	Semi-	Half; partly	Semifinal, semiannual, semicolon,
75.	Multi-	Many; much	Multiply, multitask, multifunctional,
76.	Anti-	Against; opposite of	Antisocial, antiwar, antibiotic,
77.	Micro-	Small; minute	Microscope, microwave, microorganism,
78.	Auto-	Self; own	Autograph, automatic, autobiography,
79.	Post-	After; later	Postpone, postwar, postscript,
80.	Pre-	Before; prior to	Preschool, prepare, prevent, preside,
81.	Neo-	New; recent	Neolithic, neoclassical, neo-Nazi,
82.	Ex-	Former; out of	Ex-wife, ex-president, ex-convict,
83.	Co-	Together; joint	Coexist, cooperate, coauthor,
84.	Con-	Together; with	Connect, confer, concur, conform,
85.	Dis-	Not; opposite of	Dislike, disconnect, disagree, disapprove
86.	En-	Put into; cause to	Enclose, enable, enrich, encircle,
87.	Extra-	Beyond; additional	Extracurricular, extraordinary,
88.	Fore-	Before; in advance	Foresee, forecast, forehead, forearm,
89.	Inter-	Between; among	Interact, interfere, interconnect,
90.	Mis-	Wrong; incorrect	Misbehave, mislead, misplace, misprint
91.	Over-	Excessive; too much	Overcome, overlook, overeat, overreact
92.	Per-	Through; completely	Perceive, persist, persuade, perforate,
93.	Pro-	Forward; in favor of	Promote, proceed, protect, provide,
94.	Re-	Again; back	Reread, rebuild, recover, revisit, rewrite
95.	Semi-	Half; partly	Semifinal, semiannual, semicolon,
96.	Sub-	Under; below	Submerge, subside, subzero, subtitle
97.	Super-	Above; beyond	Supersize, superhero, supernatural
98.	Trans-	Across; beyond	Transfer, transform, transatlantic,
99.	Under-	Below; insufficient	Underestimate, underground, undergo,
100.	Up-	Higher; increased	Uplift, upgrade, upturn, upstairs,
101.	Uni-	One; single	Unicycle, unicorn, unison, uniform,
102.	Bi-	Two; twice	Bicycle, binoculars, bilingual,
103.	Tri-	Three	Tricycle, triangle, trilogy,
104.	Quad-	Four	Quadrant, quadruple, quadratic,
105.	Multi-	Many; much	Multiply, multitask, multifunctional,
106.	Semi-	Half; partly	Semifinal, semiannual, semicolon,
107.	Anti-	Against; opposite of	Antisocial, antiwar, antibiotic,
108.	Micro-	Small; minute	Microscope, microwave, microorganism,
109.	Auto-	Self; own	Autograph, automatic, autobiography,
110.	Post-	After; later	Postpone, postwar, postscript,
111.	Pre-	Before; prior to	Preschool, prepare, prevent, preside,
112.	Neo-	New; recent	Neolithic, neoclassical, neo-Nazi,
113.	Ex-	Former; out of	Ex-wife, ex-president, ex-convict,
114.	Co-	Together; joint	Coexist, cooperate, coauthor,
115.	Fore-	Before; in advance	Foresee, forecast, forehead, forearm,
116.	Trans-	Across; beyond	Transfer, transform, transatlantic,
117.	Under-	Below; insufficient	Underestimate, underground, undergo,
118.	Hyper-	Excessive; beyond	Hyperactive, hypersensitive, hyperbole,
119.	Mega-	Great; million	Megabyte, megaphone, megalith,
120.	Mini-	Small; miniature	Minibus, miniskirt, minivan,
121.	Out-	Beyond; out of	Outshine, outgrow, outlive, outfield,
122.	Up-	Higher; increased	Uplift, upgrade, upturn, upstairs,
123.	Down-	Lower; decreased	Downsize, downturn, downgrade, downfall,
124.	Mid-	Middle; halfway	Midnight, midpoint, midyear, midway,
125.	Fore-	Before; in advance	Foresee, forecast, forehead, forearm,
126.	Trans-	Across; beyond	Transfer, transform, transatlantic,
127.	Under-	Below; insufficient	Underestimate, underground, undergo,
128.	Hyper-	Excessive; beyond	Hyperactive, hypersensitive, hyperbole,
129.	Mega-	Great; million	Megabyte, megaphone, megalith,
130.	Mini-	Small; miniature	Minibus, miniskirt, minivan,
131.	Multi-	Many; much	Multiply, multitask, multifunctional,
132.	Semi-	Half; partly	Semifinal, semiannual, semicolon,
133.	Anti-	Against; opposite of	Antisocial, antiwar, antibiotic,
134.	Micro-	Small; minute	Microscope, microwave, microorganism,
135.	Auto-	Self; own	Autograph, automatic, autobiography,
136.	Post-	After; later	Postpone, postwar, postscript,
137.	Pre-	Before; prior to	Preschool, prepare, prevent, preside,
138.	Neo-	New; recent	Neolithic, neoclassical, neo-Nazi,
139.	Ex-	Former; out of	Ex-wife, ex-president, ex-convict,
140.	Co-	Together; joint	Coexist, cooperate, coauthor,
141.	Fore-	Before; in advance	Foresee, forecast, forehead, forearm,
142.	Trans-	Across; beyond	Transfer, transform, transatlantic,
143.	Under-	Below; insufficient	Underestimate, underground, undergo,
144.	Hyper-	Excessive; beyond	Hyperactive, hypersensitive, hyperbole,
145.	Mega-	Great; million	Megabyte, megaphone, megalith,
146.	Mini-	Small; miniature	Minibus, miniskirt, minivan,
147.	Out-	Beyond; out of	Outshine, outgrow, outlive, outfield,
148.	Up-	Higher; increased	Uplift, upgrade, upturn, upstairs,
149.	Down-	Lower; decreased	Downsize, downturn, downgrade, downfall,
150.	Mid-	Middle; halfway	Midnight, midpoint, midyear, midway,
151.	Fore-	Before; in advance	Foresee, forecast, forehead, forearm,
152.	Trans-	Across; beyond	Transfer, transform, transatlantic,
153.	Under-	Below; insufficient	Underestimate, underground, undergo,
154.	Hyper-	Excessive; beyond	Hyperactive, hypersensitive, hyperbole,
155.	Mega-	Great; million	Megabyte, megaphone, megalith,
156.	Mini-	Small; miniature	Minibus, miniskirt, minivan,
157.	Out-	Beyond; out of	Outshine, outgrow, outlive, outfield,
158.	Up-	Higher; increased	Uplift, upgrade, upturn, upstairs,
159.	Down-	Lower; decreased	Downsize, downturn, downgrade, downfall,
160.	Mid-	Middle; halfway	Midnight, midpoint, midyear, midway,
161.	Over-	Excessive; too much	Overcome, overlook, overeat, overreact
162.	Per-	Through; completely	Perceive, persist, persuade, perforate,
163.	Pro-	Forward; in favor of	Promote, proceed, protect, provide,
164.	Re-	Again; back	Reread, rebuild, recover, revisit, rewrite
165.	Un-	Not; opposite of	Unhappy, untidy, unfair, unsure, unkind
166.	In-	Not; into	Invisible, incomplete, inhale, invade
167.	Out-	Beyond; out of	Outshine, outgrow, outlive, outfield,
168.	Pre-	Before; prior to	Preschool, prepare, prevent, preside,
169.	Ex-	Former; out of	Ex-wife, ex-president, ex-convict,
170.	Co-	Together; joint	Coexist, cooperate, coauthor,
171.	De-	Opposite of; remove	Defrost, devalue, deactivate, declassify
172.	En-	Put into; cause to	Enclose, enable, enrich, encircle,
173.	Extra-	Beyond; additional	Extracurricular, extraordinary,
174.	Inter-	Between; among	Interact, interfere, interconnect,
175.	Mis-	Wrong; incorrect	Misbehave, mislead, misplace, misprint
176.	Sub-	Under; below	Submerge, subside, subzero, subtitle
177.	Super-	Above; beyond	Supersize, superhero, supernatural
178.	Trans-	Across; beyond	Transfer, transform, transatlantic,
179.	Under-	Below; insufficient	Underestimate, underground, undergo,
180.	Hyper-	Excessive; beyond	Hyperactive, hypersensitive, hyperbole,
181.	Mega-	Great; million	Megabyte, megaphone, megalith,
182.	Mini-	Small; miniature	Minibus, miniskirt, minivan,
183.	Out-	Beyond; out of	Outshine, outgrow, outlive, outfield,
184.	Up-	Higher; increased	Uplift, upgrade, upturn, upstairs,
185.	Down-	Lower; decreased	Downsize, downturn, downgrade, downfall,
186.	Mid-	Middle; halfway	Midnight, midpoint, midyear, midway,
187.	Fore-	Before; in advance	Foresee, forecast, forehead, forearm,
188.	Trans-	Across; beyond	Transfer, transform, transatlantic,
189.	Under-	Below; insufficient	Underestimate, underground, undergo,
190.	Hyper-	Excessive; beyond	Hyperactive, hypersensitive, hyperbole,
191.	Mega-	Great; million	Megabyte, megaphone, megalith,
192.	Mini-	Small; miniature	Minibus, miniskirt, minivan,
193.	Out-	Beyond; out of	Outshine, outgrow, outlive, outfield,
194.	Up-	Higher; increased	Uplift, upgrade, upturn, upstairs,
195.	Down-	Lower; decreased	Downsize, downturn, downgrade, downfall,
196.	Mid-	Middle; halfway	Midnight, midpoint, midyear, midway,
197.	Re-	Again; back	Reread, rebuild, recover, revisit, rewrite
198.	Un-	Not; opposite of	Unhappy, untidy, unfair, unsure, unkind
199.	In-	Not; into	Invisible, incomplete, inhale, invade
200.	Out-	Beyond; out of	Outshine, outgrow, outlive, outfield,