Move in together, as in Couples today often set up housekeeping long before they marry. [Mid-1800s]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
How to use set up housekeeping in a sentence
The two might have vowed eternal friendship and set up housekeeping together on a platonic footing.Johnny Ludlow, Fourth Series | Mrs. Henry Wood
After a short stay in their first home, Molire and his wife set up housekeeping in Rue de Richelieu.The Stones of Paris in History and Letters, Volume I (of 2) | Benjamin Ellis Martin
One March a pair of bluebirds decided to set up housekeeping in the trunk of an old apple-tree near my house.A Year in the Fields | John Burroughs
"Enough to set up housekeeping, if the right sort of things are in them;" and he gave a short laugh.A Little Girl in Old Salem | Amanda Minnie Douglas
When he was married later, he gave him some fine mahogany furniture, from his own home, to set up housekeeping with.Old Rail Fence Corners | Various