| A | B |
|---|
| incorrigible | impossible to correct, control, or discipline |
| incredulous | unwilling or unable to believe |
| indict | charge with a crime; accuse |
| indigent | very poor |
| indolent | lazy |
| induce | cause to happen; bring about |
| inert | lacking movement; inactive; sluggish |
| infallible | incapable of making a mistake |
| infamy | a bad reputation; notoriety |
| infer | to figure out, based on given information; conclude; deduce |
| infiltrate | penetrate by passing through gaps; enter secretly and become established, such as a spy might do in an enemy organization |
| ingenuous | naive; unsophisticated; inexperienced |
| innate | having a quality that arises from within, rather than learned or acquired from the outside; native; inborn |
| innocuous | harmless; inoffensive |
| innovation | a new idea or product; a new way of doing womething that is so much better, it causes others to copy it |
| inscrutable | mysterious |
| insipid | dull; flat; without sparkle or flavor |
| insolent | rude haughty |
| insolvent | unalbe to pay bills; bankrupt |
| intermittent | occurring at intervals; periodic |
| intractable | stubborn; immovable |
| intrinsic | located within the very nature of an object or person; inherent |
| invert | turn upside down or inside out; reverse position |
| irascible | easily angered |
| irony | an unexpected outcome, or the use of a word that is the opposite of its literal meaning |
| irresolute | indecisive; unsure |
| irreverent | disrespectful |
| jargon | specialized language used by a particular group |
