'flawlessly-produced' originates from the combination of 'flawless' and 'produce', where 'flawless' means 'without flaws' and 'produce' means 'to create or manufacture'.

'flawless' changed from the Middle English word 'flawles' and eventually became the modern English word 'flawless'.

Initially, 'flawless' meant 'without any defects', and this meaning has largely remained the same in modern usage.