co·hab·it 
/koʊˈhæbət/ verb
co·hab·its; co·hab·it·ed; co·hab·it·ing /koʊˈhæbət/ verb [no obj] formal : to live together and have a sexual relationship
▪ They cohabited in a small apartment in the city.
▪ They cohabited in a small apartment in the city.
— co·hab·i·ta·tion /koʊˌhæbəˈteɪʃən/ noun [noncount]
/koʊˌhæbəˈteɪʃən/ noun [noncount]
