Definition of cohabit verb from the Oxford Advanced Learner's Dictionary

 

cohabit

 verb
verb
BrE BrE//kəʊˈhæbɪt//
 
; NAmE NAmE//koʊˈhæbɪt//
 
Verb Forms present simple I / you / we / they cohabit
BrE BrE//kəʊˈhæbɪt//
 
; NAmE NAmE//koʊˈhæbɪt//
 
he / she / it cohabits
BrE BrE//kəʊˈhæbɪts//
 
; NAmE NAmE//koʊˈhæbɪts//
 
past simple cohabited
BrE BrE//kəʊˈhæbɪtɪd//
 
; NAmE NAmE//koʊˈhæbɪtɪd//
 
past participle cohabited
BrE BrE//kəʊˈhæbɪtɪd//
 
; NAmE NAmE//koʊˈhæbɪtɪd//
 
-ing form cohabiting
BrE BrE//kəʊˈhæbɪtɪŋ//
 
; NAmE NAmE//koʊˈhæbɪtɪŋ//
 
 
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[intransitive] cohabit (with somebody) (formal) (usually of a man and a woman) to live together and have a sexual relationship without being married cohabiting couples She refused to cohabit with him before the wedding. Word Origin mid 16th cent.: from Latin cohabitare, from co- ‘together’ + habitare ‘dwell’.
See the Oxford Advanced American Dictionary entry: cohabit