'wrongfully-acquired' originates from the combination of 'wrongfully' and 'acquired', where 'wrongfully' is derived from 'wrong' meaning 'not correct or fair', and 'acquired' from Latin 'acquirere', meaning 'to gain'.

'acquirere' transformed into the Old French word 'acquerre', and eventually became the modern English word 'acquire'.

Initially, 'acquire' meant 'to gain or obtain', and this meaning has largely remained the same in modern usage.