Prefixes

  1. A- (or ab-): without or not (amoral, ahistorical, abnormal, atypical)

  2. Ab-: away (absent, abdicate, aberrant, abject)

  3. Ad-: to, forward (advance, admit, adventure, adjust)

  4. Ante-: before (antecedent, antechamber, antebellum)

  5. Anti-: against (antisocial, antipathy, anticlimax, antiestablishment)

  6. Auto-: self (autonomy, autocracy, autodidact, automotive)

  7. Circum-: round, around (circumvent, circumscribe, circumference, circumnavigate)

  8. Com- (or co-/con-): with, together (compact, co-author, conclave, confluence)

  9. Contra- (or counter-): against (contravene, contrary, contrapuntal, counteract)

  10. De-: down, off, reversed (deactivate, deconstruct, descend, derail)

  11. Dia-: through (dialogue, diagnose, diaphanous, dialect)

  12. Dis-: not (disjointed, dissent, disavow, disown)

  13. E-: out of (eject, emit, edict, erect)

  14. En-: put into, cover (envelope, encase, enclose, enlist)

  15. Ex-: out of, from (excavate, extract, exclaim)

  16. Equi-: equal (equidistant, equivocal, equity)

  17. Extra-: above, outside (extraneous, extraterrestrial, extravagant)

  18. Hetero-: different (heterogenous, heterodox)

  19. Homo-: same (homonym, homophone, homogenous)

  20. Hyper-: over (hypersensitive, hyperactive, hyperbolic)

  21. Il-: not (illegitimate, illegible, illegal)

  22. Im-: not (impossible, immoderate, immoral)

  23. In-: in or not (inspect, invisible, incorrect)

  24. Intra-: within (intrastate, intravenous, intracellular)

  25. Inter-: between or among (interstate, international, intervene)

  26. Ir-: not (irresponsible, irreverent, irreligious)

  27. Magni-: large (magnitude, magnanimous, magnificent)

  28. Micro-: small (microscope, microcosm, microwave)

  29. Mis-: wrong (misunderstand, misfit, mismanage)

  30. Mono-: one (monologue, monopoly, monoculture)

  31. Multi-: many (multicolored, multicultural, multiply)

  32. Neo-: new (neophyte, neologism, neonatal)

  33. Non-: not (nonfiction, noncommittal, noncomformist)

  34. Ob-: against (obstruct, obstinate, obdurate)

  35. Over-: too much (overestimate, overkill, overachieve)

  36. Pan-: all (pandemonium, panacea, Pan-African)

  37. Per-: through (pervade, permeate, permit)

  38. Peri-: around (perimeter, pericardium, periscope)

  39. Poly-: many (polyglot, polygon, polycarbonate)

  40. Post-: after (postpone, postlapsarian, postmodern)

  41. Pre-: before (preplan, prewrite, previous)

  42. Pro-: forward (progress, propellant, promote)

  43. Pseudo-: false (pseudonym, pseudointellectual, pseudoscience)

  44. Re-: again or back (revisit, reject, return)

  45. Retro-: backward (retrospective, retroactive, retrograde)

  46. Sub-: under (submerge, submarine, subject)

  47. Super-: over (supernatural, superb, superior)

  48. Sym- (or syn-): with or together (synthetic, synchronize, symphony)

  49. Trans-: across (transatlantic, transform, transport)

  50. Un-: not (unsuccessful, unnerving, unnatural)

  1. Bi-: two (bifocal, bisect, bilateral)

  2. Cent-: 100 (century, centigrade, centimeter)

  3. Dec-: ten (decade, decimal, decalogue)

  4. Hemi-: half (hemisphere, hemitrope)

  5. Kilo-: 1,000 (kilometer, kilogram, kilobyte)

  6. Milli-: 1,000 (millipede, millisecond, millions)

  7. Quad-: four (quadruple, quadrant, quadriplegic)

  8. Semi-: half (semicircle, semiannual, semiformal)

  9. Tri-: three (triangle, trilogy, triple)

  10. Uni-: one (uniform, univocal, unisex)