Prefix
| Root Word | Prefix | Opposite Word |
|---|---|---|
| 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 |
| Root Word | Prefix | Opposite Word |
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