'pandemonium' originates from Greek, specifically the word 'pan' meaning 'all' and 'daimon' meaning 'demon'.

'pandemonium' was coined by John Milton in his epic poem 'Paradise Lost' to describe the capital of Hell, and eventually became a term for chaos and disorder.

Initially, it meant 'the capital of Hell' in Milton's work, but over time it evolved into its current meaning of 'chaos and disorder'.