Meanings
Suggesting that if one were to hold one's breath while waiting for the expected event, one would die before it happened
How to pronounce "don't hold your breath":
AU
Don't wait. Said cynically to suggest that what has just been mentioned is unlikely to happen soon or at all.
Example: "- The government says it's going to introduce free meals for all schoolchildren.- Huh, don't hold your breath."
Example Sentences
1
I don't think the new product will be released soon, so don't hold your breath.
2
You can complain all you want, but don't hold your breath for any immediate action.