shack up informalto start living with someone who you have sex with but are not married to – used to show disapproval同居〔含贬义〕:[+ with ]•She had shacked up with some guy from Florida.她和一个从佛罗里达州来的家伙同居了。be shacked up•Is she shacked up with anyone?她是不是和谁同居了? |