common-law wife:

A woman a man has been living with for years without being married to her. See wife for synonyms.
See Also: 21-hydroxylase deficiency, acne vulgaris, awful-wedded wife, bit of tripe, blueberry pie, blushing bride, bother and strife, brevet-wife, bugs, buttock and file, carving knife, chief cook and bottle washer, chief of staff, child pornography laws, china plate, chubs, comfortable importance, country marriage, cow and kisses, cows and kisses, cpl, critters, crooked rib, dead weight, dizzy-queen, dough-beater, drum and fife, Duchess of Fife, feme, fishwife, fork and knife, golf widow, gray mare, half-widow, head cook and bottle washer, help-spend, hen-pecker, holy bedlock, hot-water bag, in-law, joy of my life, K.P., kicksy-wicksy, KP, lawful jam, lawful wife, live together, living in sin, long-term relationship, love buns, main, main bitch, main lady, main piece, married but not churched, married country style, married on the carpet and the banns up the chimney, married woman, mate-swapping, missis, more or less married, mother-in-law, Ms. Right, novercaphobia, old and bitter, old bubble, old Dutch, old lady, old noose, people-in-law, plates and dishes, poker breaker, riding in another mans saddle, sergeant major, sister-in-law, slave driver, soceraphobia, spouse, spouse and strife, squawking half, struggle and strife, Sunday widow, trouble and strife, unholy wedlock, united in holy bedlock, unwritten law, uxoriosis, vestibulitis, war and strife, War Department, wearer of the breeches, wearer of the pants, wife-in-law, without benefit of who cares, woman of the house, worry and strife

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