'bedroom' originates from Middle English, specifically the words 'bed' and 'room', where 'bed' meant 'a place to sleep' and 'room' meant 'a space or chamber'.

'bed' and 'room' were combined in Middle English to form 'bedroom', which has remained largely unchanged in modern English.

Initially, it meant 'a room with a bed', and this meaning has largely remained the same in modern usage.