'undeveloped' originates from the prefix 'un-' meaning 'not' and the word 'developed', which comes from the Latin 'dis-' meaning 'apart' and 'voloper' meaning 'to wrap'.

'undeveloped' changed from the Old French word 'desveloper' and eventually became the modern English word 'develop'.

Initially, it meant 'to unwrap or unfold', but over time it evolved into its current meaning of 'not fully grown or matured'.