'skillfully-performed' originates from the combination of 'skillful' and 'perform,' where 'skillful' means 'having or showing skill' and 'perform' means 'to carry out an action or task.'

'skillful' changed from the Old English word 'sceolful,' and 'perform' from the Old French 'parfornir,' eventually becoming the modern English words 'skillful' and 'perform.'

Initially, 'skillful' meant 'full of skill,' and 'perform' meant 'to complete or finish,' evolving into the current meaning of 'executed with skill and precision.'