shack up meaning
UK /ʃæk ʌp/ US /ʃæk ʌp/ 2 syllables
shack up (verb): share living quarters; usually said of people who are not married and live together as a couple.
Definition of shack up
How to pronounce shack up
shack up is pronounced /ʃæk ʌp/ in British English and /ʃæk ʌp/ in American English. It has 2 syllables.
More about shack up on Wikipedia.