0 If you waste your breath, you spend time and energy trying to give advice that is ignored: --
Honestly, you're wasting your breath - he doesn't want to hear what anyone else has got to say.
1 to say something that will likely be ignored: --
Don’t waste your breath arguing with him.
NYA ORD
European
May 10, 2021
DAGENS ORD
Shimmer
waste your breath