'retouch' originates from French, specifically the word 'retoucher,' where 're-' meant 'again' and 'toucher' meant 'to touch.'

'retoucher' transformed into the English word 'retouch,' and eventually became the modern English word 'retouched' through Middle English.

Initially, it meant 'to touch again or make slight changes,' and this meaning has largely remained the same in modern usage.