housemate

[ hous-meyt ]

/ ˈhaʊsˌmeɪt /

a person with whom one shares a house or other residence.

a sexual partner with whom one shares a house or other living quarters without being married.

Origin of housemate

First recorded in 1800–10; house + mate¹

Recently, my 20-something niece was delighted to share the query by her housemate in D.C.: “Are you related to Amy Siskind?”

Don’t Call Sally Ride a Lesbian |Amy Siskind |August 2, 2012 |DAILY BEAST
Alas, his relationship with housemate Sammi sure broke that one quickly.

9 Great Jersey Shore Moments |Sujay Kumar, The Daily Beast Video |July 28, 2010 |DAILY BEAST
Every self-proclaimed guido should know this, according to housemate J-WOWW.

9 Great Jersey Shore Moments |Sujay Kumar, The Daily Beast Video |July 28, 2010 |DAILY BEAST
But you never showed him your face; of course, had you, you could not have become his father's housemate and Judas.

Helmet of Navarre |Bertha Runkle

Miss Maitland herself had swiftly caught her housemate's perturbation.

The Brass Bound Box |Evelyn Raymond
So this was the housemate who was to make them all young again with her youth and liveliness.

Harley Greenoak's Charge |Bertram Mitford
Dahlia lived seven years her sister's housemate, nurse of the growing swarm.

Rhoda Fleming, Complete |George Meredith
In this way I drifted into my position as Rossetti's housemate.

Recollections of Dante Gabriel Rossetti |T. Hall Caine

housemate

/ (ˈhaʊsˌmeɪt) /

a person who is not part of the same family, but with whom one shares a house