in/ir/il/im Prefixes and Their Meanings

Front

illegal

Back

Not allowed by law

Front

inactive

Back

Not active or not in use

Front

inseparable

Back

Unable to be separated or treated separately

Front

immobile

Back

Not able to move

Front

irregular

Back

Not following a pattern

Front

insecure

Back

Not confident or assured; uncertain and anxious

Front

inhumane

Back

Without compassion for misery or suffering; cruel

Front

immense

Back

Extremely large or great

Front

illegible

Back

Not clear enough to be read

Front

irrational

Back

Not logical or reasonable