Cohabit (verb)

1. To live together in a sexual relationship without being married.
2. To live together in the same residence.

Origin:

Derived from the words "co-" meaning "together" and "habit" meaning "to live in a particular place or way".

Examples:

1. They have been cohabiting for several years but have no plans to get married.
2. The couple decided to cohabit before getting married.
3. Cohabiting couples have the same legal rights as married couples in some countries.
4. The students were not allowed to cohabit in the dormitories.
5. The couple decided to cohabit and share expenses.