'unseat' originates from Middle English, specifically the prefix 'un-' meaning 'not' or 'opposite of', and 'seat' from Old English 'setl', meaning 'a place to sit'.

'unseat' changed from the Middle English word 'unseten' and eventually became the modern English word 'unseat'.

Initially, it meant 'to remove from a seat', but over time it evolved into its current meaning of 'to remove from a position of power or authority'.