in-

I. prefix or il- or im- or ir- Etymology: Middle English, from Anglo-French, from Latin; akin to Old English un- not ; non-, un- — usually il- before l <

illogical

>, im- before b, m, or p <

imbalance

> <

immoral

> <

impractical

>, ir- before r <

irreducible

>, and in- before other sounds <

inconclusive

> II. prefix or il- or im- or ir- Etymology: Middle English, from Anglo-French, from Latin, from in in, into 1. in ; within ; into ; toward ; on — usually il- before l <

illuviation

>, im- before b, m, or p <

immingle

>, ir- before r <

irradiance

>, and in- before other sounds <

infiltrate

> 2. en- I <

imbrute

> <

imperil

> <

inspirit

>