not hold (one's) breath(redirected from not hold breath)
not hold (one's) breath
To not expect that something will happen and therefore to not wait or take action as if it will. The electrician said he'd be here before noon, but I won't hold my breath. She wrote a letter of complaint to the airline asking for a refund, but she isn't holding her breath.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.