noun
A person who lives in the same home or apartment as you, often sharing the rent and other costs.
I live with two roommates.
My roommate pays half the rent.
Good to know
In American English, a roommate usually shares your apartment or house; you do not have to sleep in the same room.
Common phrases & grammar
have a roommate · live with a roommate · find a roommate · roommate agreement
live with + a roommate
be + someone's roommate