- a person with whom one shares a room or lodging
WordReference Random House Learner's Dictionary of American English © 2026
room•mate /ˈrumˌmeɪt, ˈrʊm-/USA pronunciation
n. [countable]
WordReference Random House Unabridged Dictionary of American English © 2026- one who shares a room or apartment with another.
room•mate
(ro̅o̅m′māt′, rŏŏm′-),USA pronunciation n.
- a person who is assigned to share or shares a room or apartment with another or others.
- room + mate1 1780–90, American.
Collins Concise English Dictionary © HarperCollins Publishers::
roommate /ˈruːmˌmeɪt; ˈrʊm-/ n
'roommate' also found in these entries (note: many are not synonyms or translations):