1. Prefixes
1) dis- (not, the opposite of) disadvantage, dislike, disagree, disappear, disarm, disaster, disastrous, disappoint, disable, disability, discharge, disclose, discount, discourage, discover, discovery, discrepancy, disease, disgrace, disguise, disgust, dishonor, dishonest, dismay, disorder, dispatch, disperse, displace, displacement, displease, disregard, dissatisfy, distort , distract, disintegrate
2) in- (not, in, into) inability, incorrect, incapable, indirect, inhuman, injustice, informal, inside, include, inclusive, income, increase, increasingly, incredible, indefinite, independence, independent, indifferent, indirect, indispensable, individual, indoor, inertia , inevitable, infamous , infinite, inhabit , inhabitant, inherent , inject, inland , inlet , inner, innocent, innumerable , input, inquire, inquiry, insane, insensitive, insert, insight, insist, inspect, inspiration , inspire, install, installation, installment , instance, instant, instinct, insulate , intense, interior, internal, into, intrinsic, invade, invalid , invaluable , invariably , invasion, invert , investigate, invisible, involve, inward, incomplete, indecisive, inedible, inept, inevitably, infection, infirm, injection, innate, insecurity, insider
3) im- (not, in, into) impossible, imbalance, immature, immoral, impatient, implicit , impress, impression, import, immigrate, imprison, immerse
4) il- (not) illegal, illiterate, illogical
5) ir- (not) irregular, irresponsible, irrespective
6) un- (not) unable, uncover, undo, undoubtedly, undress , uneasy, unemployment , unexpected, unfold , unfortunately, unimportant, unlike, unload, unusual, unaware, unenlightened, unparalleled, unsustainable
7) non- (not) nonsmoker, nonexistence, non-cooperation, nonstop, nonmetal, nonresident, nonsense, nonspecialist
8) mis- (wrong, wrongly) misjudge, misunderstand, mislead, misspell, misstep, misfortune, misuse, misguided, misinformation
9) de- (showing the opposite, to remove, to reduce) deform, deface, demobilize, destruction, deforest, denationalize, depress, depression, devalue, decode, decrease, degenerate , degrade , descend, descendant , descent
10) pre- (before, in advance) prefix, pre-historic, precaution, precede , preceding, preclude , predecessor , predict, predominant , preface, prejudice, preliminary, premature , premier , premise , premium , preparation, prepare, prepay, preside , president, presumably, presume , pretext , prevail, prevent, previous, prewar, prediction, pre-scientific, preconception
11) ante-, (before, in advance) anteroom, ante-Christian, antemeridian, anticipate, antique
12) fore- (in advance, before, in or at the front) forearm, forehead, foreman, foretell , foresee , forefather , foreleg, forerunner , fore , foremost, forecast, forewarn
13) ex- (out, out of, former) ex-minister, ex-president, ex-Soviet Union, ex-wife, export, exclude, exclusive, excursion, exhibit, exile , exit, exotic , expand, expansion, expedition , expel , expend , expenditure , expense, explode, explosion, explosive, expose, exposition , exposure, express, expression, extend, extension, extensive, exterior, external, extinct, extra, extract
14) post- (later than, after) postgraduate, postwar, postmeridian, postpone, postscript
15) sub- (under, below, less important) sub, subject, subway, subtitle, subdivide, submarine , sub-zero, submerge, submit, subordinate , subscribe , subsection, subsequent, subsidiary , subsidy , substance, substantial, substitute, subtract, suburb, subconsciously, subtly
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