be shacked up
to be living with someone as a sexual partner when you are not married to them:
"Is Alan still living with Maria?" "No, he's shacked up with someone else now."
Thesaurus: synonyms and related words
Marriage, cohabitation & other relationships
- adulteress
- affinal
- as husband and wife idiom
- be an item idiom
- civil partnership
- hitched
- honest
- husband
- intermarriage
- involvement
- marriage equality
- marriage guidance
- marriageable
- marry
- marry in haste, repent at leisure idiom
- matrimonial
- shack up
- something
- together
- wedlock
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