A prefix is a word part added to the beginning of a base word to create a new word with a different meaning. Here are numerous examples of prefixes:
1. Un- (meaning "not" or "opposite"): undo, unhappy, unlock
2. Re- (meaning "again" or "back"): redo, rewind, recall
3. Pre- (meaning "before"): preview, preheat, prepay
4. Dis- (meaning "not" or "opposite"): dislike, disappear, disobey
5. Mis- (meaning "wrong" or "badly"): misunderstand, misbehave, misplace
6. In- (meaning "not" or "in"): incomplete, indirect, invisible
7. Over- (meaning "excessive" or "too much"): overload, overlook, overcook
8. Sub- (meaning "under" or "below"): submerge, subway, substandard
9. Super- (meaning "above" or "beyond"): supercharge, superstar, supernatural
10. Anti- (meaning "against" or "opposed to"): anti-inflammatory, antisocial, antiwar
11. Inter- (meaning "between" or "among"): interact, interconnect, international
12. Post- (meaning "after" or "later"): postwar, postdate, postgraduate
13. Semi- (meaning "half" or "partially"): semifinal, semicircle, semiannual
14. Non- (meaning "not" or "without"): nonfiction, nonstop, nonverbal
15. Ex- (meaning "former" or "out of"): ex-husband, ex-president, ex-employee
16. Multi- (meaning "many" or "multiple"): multicolored, multilingual, multitask
17. Co- (meaning "together" or "jointly"): cooperate, coexist, coauthor
18. De- (meaning "opposite" or "down from"): defrost, decrease, degrade
19. Micro- (meaning "small" or "tiny"): microscope, microorganism, microchip
20. Semi- (meaning "half" or "partially"): semifinal, semicircle, semiconscious
21. Tri- (meaning "three" or "thrice"): triangle, tricycle, trimester
22. Un- (meaning "not" or "opposite"): unaware, uncertain, unfit
23. Pre- (meaning "before" or "prior to"): prearrange, prehistory, preseason
24. Sub- (meaning "below" or "under"): submarine, subway, substandard
25. Dis- (meaning "not" or "reverse action"): disapprove, disallow, disappear
26. Mis- (meaning "wrong" or "badly"): misbehave, mistake, misunderstand
27. In- (meaning "not" or "lack of"): invisible, incorrect, incomplete
28. Over- (meaning "excessive" or "too much"): overcook, overeat, overreact
29. Super- (meaning "above" or "beyond"): superstar, superhuman, supernatural
30. Anti- (meaning "against" or "opposed to"): anti-war, anti-social, antibiotic
31. Inter- (meaning "between" or "among"): interact, interconnect, international
32. Post- (meaning "after" or "behind"): postwar, postscript, post-date
33. Semi- (meaning "half" or "partially"): semi-circle, semi-final, semi-conscious
34. Non- (meaning "not" or "lack of"): nonstop, nonfiction, nonverbal
35. Ex- (meaning "former" or "out of"): ex-wife, ex-president, ex-convict
36. Multi- (meaning "many" or "several"): multicolored, multilingual, multimedia
37. Co- (meaning "together" or "with"): cooperate, coexist, coworker
38. De- (meaning "opposite" or "removal"): deactivate, decrease, defrost
39. Micro- (meaning "small" or "tiny"): microscope, microorganism, microwave
40. Semi- (meaning "half" or "partially"): semicircle, semifinal, semicolon
These examples demonstrate the versatility and usage of various prefixes to create new words with different meanings.
