washroom
Word family
Synonym discussion
Sense: noun/1
All four words refer to a room with a toilet, but they differ in region and formality. 'Washroom' is the standard polite term in Canadian English, used in schools, restaurants, and other public buildings. 'Restroom' serves the same polite role in the United States. 'Bathroom' in American English can refer to a public toilet, though its core meaning includes a bathtub or shower — using it for a public restroom is common but technically imprecise. 'Toilet' is the direct, neutral term in British English and many other varieties; it can feel too blunt for some American or Canadian speakers. 'Lavatory' is formal and somewhat dated, now mostly seen on airplane signs. In everyday conversation, a Canadian might say 'I need to find a washroom', while an American would say 'restroom' and a British person would say 'toilet'.
Common collocations
Etymology
A compound of 'wash' (from Old English 'wascan', meaning to clean with water, of Germanic origin) and 'room' (from Old English 'rūm', meaning space or chamber). The word emerged in the early 20th century as a euphemistic term for a toilet room, avoiding the more direct 'toilet' or 'lavatory'. It became especially established in Canadian English.
First known use
1806
1806, in the meaning defined above