'carefully-reviewed' originates from the combination of 'carefully' and 'reviewed', where 'carefully' is derived from 'care' meaning 'attention' and '-fully' meaning 'in a manner of'. 'Reviewed' comes from 'review', which originates from Latin 'revidere', where 're-' meant 'again' and 'videre' meant 'to see'.

'carefully-reviewed' changed from the combination of 'carefully' and 'reviewed' in modern English, maintaining its meaning of thorough examination.

Initially, it meant 'examined with care', and this meaning has largely remained the same in modern usage.