'sumptuously-produced' originates from two English words: 'sumptuously' and 'produced'. 'Sumptuously' ultimately derives from Latin 'sumptuosus' (from 'sumptus'), where 'sumptus' meant 'expense' or 'cost'. 'Produced' comes from Latin 'producere', where the prefix 'pro-' meant 'forward' and 'ducere' meant 'to lead'.

'sumptuosus' developed into Late Latin and Old French forms (e.g. Old French 'sumptueux') and entered Middle English as 'sumptuous', later forming the adverb 'sumptuously'. Separately, Latin 'producere' became Old French 'produire' and then Middle English 'produce', with the past participle 'produced' used in compounds and adjectival phrases.

Initially, the components referred to 'expense/cost' and 'to bring forth' separately; combined usage evolved to describe something created or staged with lavish expense. The modern sense is 'lavishly made or presented'.