Prefix
| Root Word | Prefix | Opposite Word |
|---|---|---|
| accurate | in | inaccurate |
| active | in | inactive |
| adequate | in | inadequate |
| attentive | in | inattentive |
| audible | in | inaudible |
| considerate | in | inconsiderate |
| consistent | in | inconsistent |
| correct | in | incorrect |
| curable | in | incurable |
| decent | in | indecent |
| definite | in | indefinite |
| different | in | indifferent |
| digestion | in | indigestion |
| direct | in | indirect |
| disciplined | in | indisciplined |
| dispensable | in | indispensable |
| divisible | in | indivisible |
| edible | in | inedible |
| effective | in | ineffective |
| efficient | in | inefficient |
| elastic | in | inelastic |
| equality | in | inequality |
| fallible | in | infallible |
| justice | in | injustice |
| organic | in | inorganic |
| secure | in | insecure |
| significant | in | insignificant |
| sincere | in | insincere |
| solvent | in | insolvent |
| tolerable | in | intolerable |
| visible | in | invisible |
| able | un | unable |
| acceptable | un | unacceptable |
| avoidable | un | unavoidable |
| aware | un | unaware |
| balanced | un | unbalanced |
| beaten | un | unbeaten |
| believable | un | unbelievable |
| biased | un | unbiased |
| broken | un | unbroken |
| certain | un | uncertain |
| civilized | un | uncivilized |
| comfortable | un | uncomfortable |
| countable | un | uncountable |
| conscious | un | unconscious |
| cover | un | uncover |
| desirable | un | undesirable |
| easy | un | uneasy |
| fair | un | unfair |
| familiar | un | unfamiliar |
| favourable | un | unfavourable |
| fit | un | unfit |
| grateful | un | ungrateful |
| happy | un | unhappy |
| healthy | un | unhealthy |
| important | un | unimportant |
| impressive | un | unimpressive |
| lock | un | unlock |
| lucky | un | unlucky |
| natural | un | unnatural |
| necessary | un | unnecessary |
| popular | un | unpopular |
| questionable | un | unquestionable |
| safe | un | unsafe |
| social | un | unsocial |
| pleasant | un | unpleasant |
| legal | il | illegal |
| legible | il | illegible |
| logical | il | illogical |
| literate | il | illiterate |
| mature | im | immature |
| moral | im | immoral |
| mortal | im | immortal |
| perfect | im | imperfect |
| personal | im | impersonal |
| patient | im | impatient |
| polite | im | impolite |
| possible | im | impossible |
| proper | im | improper |
| practical | im | impractical |
| pure | im | impure |
| regular | ir | irregular |
| relevant | ir | irrelevant |
| resistible | ir | irresistable |
| responsible | ir | irresponsible |
| agree | dis | disagree |
| approve | dis | disapprove |
| belief | dis | disbelief |
| colour | dis | discolour |
| connect | dis | disconnect |
| continue | dis | discontinue |
| credit | dis | discredit |
| ease | dis | disease |
| favour | dis | disfavour |
| honest | dis | dishonest |
| honour | dis | dishonour |
| like | dis | dislike |
| obey | dis | disobey |
| order | dis | disorder |
| parity | dis | disparity |
| pleased | dis | displeased |
| regard | dis | disregard |
| qualify | dis | disqualify |
| satisfied | dis | dissatisfied |
| trust | dis | distrust |
| unity | dis | disunity |
| fit | mis | misfit |
| fortune | mis | misfortune |
| guide | mis | misguide |
| lead | mis | mislead |
| manage | mis | mismanage |
| understand | mis | misunderstand |
| use | mis | misuse |
| Root Word | Prefix | Opposite Word |
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