'uneducated' originates from the prefix 'un-' meaning 'not' and the word 'educated' from Latin 'educatus', past participle of 'educare', meaning 'to bring up or train'.

'educatus' transformed into the Old French word 'educer', and eventually became the modern English word 'educate', with 'uneducated' forming as its negative.

Initially, it meant 'not brought up or trained', but over time it evolved into its current meaning of 'lacking formal education'.