'abirritant' originates from Latin, specifically the word 'abirritare,' where 'ab-' meant 'away from' and 'irritare' meant 'to irritate.'

'abirritare' transformed into the French word 'abirritant,' and eventually became the modern English word 'abirritant' through Middle English.

Initially, it meant 'to take away irritation,' and this meaning has largely remained the same in modern usage.