'acosmist' originates from Greek, specifically the word 'kosmos,' where 'a-' meant 'not' or 'without' and 'kosmos' meant 'order' or 'universe.'

'acosmist' changed from the Greek word 'akosmos' and eventually became the modern English word 'acosmist'.

Initially, it meant 'without order or universe,' but over time it evolved into its current meaning of 'denying the existence of the universe as a distinct entity.'