'unclaimed' originates from the prefix 'un-' meaning 'not' and the word 'claim' from Old French 'clamer', which meant 'to call out or demand'.

'claim' changed from the Old French word 'clamer' and eventually became the modern English word 'claim'.

Initially, 'claim' meant 'to call out or demand', but over time it evolved into its current meaning of 'to assert ownership or right'.