'reexamine' originates from the prefix 're-' meaning 'again' and the word 'examine' from Latin 'examinare', where 'ex-' meant 'out' and 'agmen' meant 'a driving'.

'examinare' transformed into the Old French word 'examiner', and eventually became the modern English word 'examine'. The prefix 're-' was added to form 'reexamine'.

Initially, it meant 'to inspect or scrutinize', and over time it evolved into its current meaning of 'to examine again'.