'carefully-settled' originates from the combination of 'carefully' and 'settled', where 'carefully' comes from 'care' meaning 'attention' and 'settled' from 'settle' meaning 'to resolve'.

'carefully' evolved from Old English 'carful', and 'settled' from Old English 'setlan', eventually forming the modern English term 'carefully-settled'.

Initially, 'carefully' meant 'full of care' and 'settled' meant 'to place or fix', but over time, they combined to mean 'resolved with attention to detail'.