'alibi' originates from Latin, specifically the word 'alibī', where 'ali-' meant 'other' and '-bī' meant 'place'.

'alibī' transformed into the English word 'alibi', and eventually became the modern English word 'alibi'.

Initially, it meant 'elsewhere', but over time it evolved into its current meaning of 'a claim or piece of evidence that one was elsewhere when an act, typically a criminal one, is alleged to have taken place'.