'carefully-dealt' originates from the combination of 'carefully' and 'dealt', where 'carefully' is derived from 'care' meaning 'attention' and '-fully' indicating 'in a manner of'. 'Dealt' is the past participle of 'deal', which comes from Old English 'dǣlan', meaning 'to divide or distribute'.

'carefully' evolved from Middle English 'careful', and 'dealt' from Old English 'dǣlan', eventually forming the modern English term 'carefully-dealt'.

Initially, 'carefully' meant 'full of care', and 'dealt' meant 'distributed'. Over time, 'carefully-dealt' evolved to mean 'handled with precision'.