Which pair of words has prefixes that mean not?

overweight, irresponsible

illegal, outgrow

illegal, irresponsible

overweight, outgrow

Pair of words that have prefixes that mean not: irresponsible, illegal; because IR and IL are negative prefixes. Other negative prefixes are IN - IM - IG - NON - UN, etc. Prefixes are morphemes (the smallest grammatical unit) added at the beginning of a word to change its meaning. There are different kinds of prefixes with multiple usages.