'skillfully-done' originates from the combination of 'skillfully' and 'done', where 'skillfully' is derived from 'skill' meaning 'ability or expertise' and 'done' is the past participle of 'do'.

'skillfully' evolved from the Old Norse word 'skil', meaning 'discernment', and 'done' from the Old English 'don', meaning 'to perform'.

Initially, 'skillfully-done' meant 'performed with skill', and this meaning has remained consistent over time.