| A | B |
| implausible | unlikely, not plausible; not having the appearance of truth or credibility: an implausible alibi. |
| implement | 1. an instrument or tool, 2.to fulfill; perform; carry out: Once in office, he failed to implement his campaign promises. |
| impudence | impertinence; rudeness |
| inadvertent | unintentionally, carelessly |
| inane | lacking sense, significance, or ideas; silly: ex. inane questions. |
| incisive | cutting, sharp, acid, mordant; sarcastic, sardonic. |
| incite | to stir, encourage, or urge on; stimulate or prompt to action: ex. to incite a crowd to riot. |
| incongruous | not fitting, absurd,inconsistent: actions that were incongruous with their professed principles. |
| inconsequential | insignificant; unimportant |
| incorrigible | bad beyond correction or reform: incorrigible behavior; ex. an incorrigible liar. |
| indict | to bring a formal accusation against, as a means of bringing to trial: ex. The grand jury indicted him for murder.to charge with an offense or crime; accuse of wrongdoing; |
| indifferent | unmoved or unconcerned; not caring |
| indiscriminate | lacking in care, judgment, selectivity, haphazard; thoughtless |
| induce | persuade, to bring about, produce or cause |
| inert | having no power to act, or to make motion, or to resist |
| ingenious | clever, resourceful, intelligent, showing genious |
| inherent | existing in someone or something as a permanent and inseparable quality by nature: ex. an inherent distrust of strangers. |
| innate | existing in one from birth; inborn; native: innate musical talent. |
| innocuous | harmless, |
| innovation | something new or different introduced: ex. numerous innovations in the high-school curriculum. |