pull the rug out from under someone
idiomPart ofrug
pull the rug out from under someone — idiom
1. to suddenly take away help, support, or an advantage from someone, leaving them
1.idiom
Definition
to suddenly take away help, support, or an advantage from someone, leaving them in a difficult or weak position
Example
When the bank refused the loan, it pulled the rug out from under the family's house renovation plans.
The sudden cancellation of the bus service pulled the rug out from under the village's elderly residents.