'adrench' originates from Middle English, specifically the word 'adrencchen,' where 'a-' meant 'completely' and 'drencchen' meant 'to drench.'

'adrencchen' transformed into the modern English word 'adrench' through gradual phonetic simplification.

Initially, it meant 'to be completely drenched,' and this meaning has largely remained the same in modern usage.