'atypically-changed' originates from the English word 'atypical,' which is derived from the Greek prefix 'a-' meaning 'not' and 'typical' from 'typos' meaning 'type.'

'atypical' evolved from the Greek word 'atypikos,' and eventually became the modern English word 'atypical.'

Initially, it meant 'not typical,' and this meaning has largely remained the same in modern usage.