Answer:

inlaw

Answer	Crossword Clue
INLAW	Certain relative
INLAW	Relative by marriage
INLAW	Acquired relative

INLAW	Relative through marriage
INLAW	Brother from another mother, perhaps?
INLAW	Spouse's sibling
INLAW	Relative
INLAW	Spouse's kin
INLAW	Hubby's dad, for one
INLAW	Kin by marriage
INLAW	Kin after a hitching

INLAW	Kin after hitching
INLAW	Mother of the bride, e.g.
INLAW	Marriage acquisition
INLAW	Extended-family member
INLAW	Acquisition by marriage
INLAW	Holiday visitor
INLAW	Mike, to Archie and Edith
INLAW	Oft-maligned relative

INLAW	Kin of a kind
INLAW	Eloper's acquisition
INLAW	Consequence of joining a union?
INLAW	Relative acquired at the altar
INLAW	Relative via marriage
INLAW	Oft-maligned kin
INLAW	Union acquisition?
INLAW	"Family Feud" teammate, often

INLAW	Mother-...
INLAW	Wedding acquisition
INLAW	Non-blood relative
INLAW	Archie Bunker, to Mike Stivic
INLAW	One of the extended family
INLAW	Wife's mother, e.g.
INLAW	Acquired kin
INLAW	Acquired relation

INLAW	Wedding attendee
INLAW	Archie, to "Meathead"
INLAW	Father follower
INLAW	Groom's new relative
INLAW	Spousal relative