Cohabit

[kəʊ'hæbɪt]

(verb.) share living quarters; usually said of people who are not married and live together as a couple.

Edited by Kelsey--From WordNet

(v.) To inhabit or reside in company, or in the same place or country.

(v.) To dwell or live together as husband and wife.

Edited by Denny

v. n. Live together (as husband and wife).

Checker: Roy

v.i. to dwell together as husband and wife often of persons not married.—ns. Cohab′itant one dwelling with others; Cohabitā′tion.

Typist: Nigel