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常用英语单词词根大全

1) dis(not, the opposite of)

disadvantage,dislike,disagree,disapperd,disarm,disaster,disastrous, disappoint,disable,disability,discharge,disclose,discount,discourage, discover, discovery, discrepancy, disease, disgrace, disguise, disgust, dishonor, dishonest, dislike, dismay, disorder, dispatch, disperse, displace, displacement, displease, disregard, dissatisfy, distort , distract, disintegrate, isparage, dispassion, disproportionate

2) in- (not, in, into)

inability,incorrect, inability, 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, inside, 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, insatiable, insecurity, insider, insidious

3) im- (not, in, into)

impossible, imbalance, immature, immoral, impatient, implicit , impress, impression, import, immigrate, imprison, immerse

4) il- (not) ,ir- (not)

illegal, illiterate, illogical irregular,irresponsible,irrespective

5) un- (not)

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unable, uncover, undo, undoubtedly, undress , uneasy, unemployment , unexpected, unfold , unfortunately, unimportant, unlike, unload, unusual, unaware, enlightened, unparalleled, unsustainable,

6) non- (not)

nonsmoker, nonexistence, non-cooperation, nonstop, nonmetal,nonresident, nonsense, nonfundamentalist, nonspecialist

7) mis- (wrong, wrongly)

mislead, misspell, misstep, misfortune, misuse,misguided,misinformation

8) de- (showing the opposite, to remove, to reduce)

deform, deface,demobilize, destruction,deforest,denationalize,depress, depression,decode, decrease, degenerate , degrade , descend,descendant , descent

9) pre- (before, in advance)

prefix,pre-historic,precaution,precede ,preceding,preclude , predict predecessor,, predominant , preface,prejudice, preliminary, premature , premier , premise , premium ,preparation, prepare, prepay, preside , president, presumably, presume ,pretext , prevail, prevent, previous, prewar, preconception,prediction,prescientific,presumptively

10) ante-, (before, in advance)

anteroom, ante-Christian, antemeridian,anticipate, antique

11) fore- (in advance, before, in or at the front)

forearm, forehead,foreman, foretell , foresee , forefather , foreleg, forerunner , fore ,foremost, forecast, forewarn

12) 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,

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explosive, expose, exposition , exposure,express, expression, extend, extension, extensive, exterior, external,extinct, extra, extract 13) post- (later than, after) postgraduate, postwar, postmeridian, postpone, postscript

14) 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

15) infra- (below in a range, beyond) infrastructure , infrared 16) re- (again, back to a former state) react, reaction, recall, recede , receipt, recipient , reclaim , recognize, recognition, record, recorder, recover, recovery, recreation, recur , recycle , redundant , reflect, reflection, reflexion, reform, refrain , refresh, refreshment , refund , refute , reinforce, reject, remember, remind, removal, remove, renaissance

, renew, repay , repeat, repeatedly, repel , repetition, replace, replacement, represent, representative, repression , reproduce, respect, respond, response, responsibility, responsible, restore, resume, return, reunion , revise, revive

17) co-, col-, com-, con-, cor- (with together) co-existence, cooperative , co-author, coalition , coherent , coincide , coincidence , collaboration , colleague, collide , collision, collocation, compassion, compassionate,

concentric, confederation, conjoin, coordinate, correlate, correlation, correspond

18) inter- (between, among) interchange, interchangeable, interdependent,

interpersonal, interview, interact , interaction, intercourse ,