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shackup

American  
[shak-uhp] / ˈʃækˌʌp /

noun

Slang.

  1. an instance of shacking up.

    The census people counted both marriages and shackups.

Etymology

Origin of shackup

First recorded in 1945–50; noun use of verb phrase shack up

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.