'expertly-executed' originates from the combination of 'expertly' and 'executed', where 'expertly' is derived from 'expert', meaning 'skilled', and 'executed' from 'execute', meaning 'to carry out'.

'expertly' evolved from the Latin word 'expertus', and 'executed' from the Latin 'executus', eventually forming the modern English term 'expertly-executed'.

Initially, it meant 'carried out by an expert', but over time it evolved into its current meaning of 'performed with high skill'.