'zealously-produced' originates from the English word 'zealous,' which comes from the Greek word 'zelos,' meaning 'ardor' or 'fervor.' The suffix '-ly' is used to form adverbs, and 'produced' is derived from the Latin word 'producere,' meaning 'to bring forth.'

'zealous' changed from the Greek word 'zelos' to the Latin 'zelus,' and eventually became the modern English word 'zealous.' 'Produced' evolved from the Latin 'producere' to the Old French 'produire,' and finally to the modern English 'produce.'

Initially, 'zealous' meant 'ardor' or 'fervor,' and 'produced' meant 'to bring forth.' Over time, 'zealously-produced' evolved to mean 'created with great enthusiasm.'