'unconvinced' originates from the prefix 'un-' meaning 'not' and the verb 'convince', which comes from Latin 'convincere', where 'con-' meant 'together' and 'vincere' meant 'to conquer'.

'convincere' transformed into the Old French word 'convaincre', and eventually became the modern English word 'convince'.

Initially, 'convince' meant 'to conquer or overcome', but over time it evolved into its current meaning of 'persuade or assure'.