'smoothly-produced' originates from the combination of 'smoothly' and 'produced'. 'Smoothly' comes from 'smooth', which has Old English origins in the word 'smōth', meaning 'free from roughness'. 'Produced' comes from Latin 'producere', where 'pro-' meant 'forward' and 'ducere' meant 'to lead'.

'Smoothly' evolved from Old English 'smōth' to Middle English 'smoþ', and eventually became the modern English 'smoothly'. 'Produced' evolved from Latin 'producere' to Old French 'produire', and eventually became the modern English 'produced'.

Initially, 'smoothly' meant 'free from roughness', and 'produced' meant 'to lead forward'. Over time, 'smoothly-produced' evolved to mean 'created in a manner free from roughness'.