cohabit
/kəʊˈhæbɪt/ 52If two people are cohabiting, they are living together and have a sexual relationship, but are not married. 同居
verb [vt. 及物动词]同居（尤指未婚而同居者）
About one-third of all people cohabit at some time in their lives.
大约有三分之一的人曾与人同居。
单词造句: