roomien.
/ˈruːmi/, /ˈrʊmi/, U.S. /ˈrumi/, /ˈrʊmi/ colloquial (originally and chiefly North American).
A roommate.
ΘΚΠ
society > inhabiting and dwelling > inhabitant > temporary inhabitant > [noun] > in another's house > lodger > room-mate
chamber-fellow1535
comrade1591
comrado1598
chamber-mate1612
roommate1789
bunkie1858
suitemate1893
roomie1911
1911 M. Warde Betty Wales Decides 311 Hello, roomie! Too bad I waked you out of your early morning nap with that squeaky door.
1915 Technol. Monthly (Mass. Inst. Technol.) Feb. 25 When your roomie has a sister of fussable age, you're supposed to ask her up to the 'Stute for something—it's fraternity etiquette.
1918 Sat. Evening Post 6 July 5/3 I wouldn't make no holler at that if they had of left us pick our own roomys.
1945 Richmond (Va.) Times-Dispatch 26 July 14/7 Short~stop Skeeter Newsome, ‘Inky's’ roomie on the road, went home because of illness in his family.
1967 ‘E. Queen’ Face to Face xvi. 76 The Temple girl is given an alibi by her roomie.
1976 ‘B. Shelby’ Great Pebble Affair 77 One of the screws came and rattled the bars on my cage. ‘Hey... We finally got you a roomie.’
2001 Sugar Feb. 99/4 Good looking, loaded and coolly confident, Scout quickly bonds with his roomie.
This entry has been updated (OED Third Edition, November 2010; most recently modified version published online March 2022).
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n.1911