waste (one's) breath

(redirected from waste their breaths)

waste (one's) breath

To talk of, discuss, or say things that are likely to be ignored or are in vain. Don't bother trying to change my mind about this, you're wasting your breath! It looks like I wasted my breath trying to pitch my idea to the board of directors.
See also: breath, waste

waste one's breath

Fig. to waste one's time talking; to talk in vain. Don't waste your breath talking to her. She won't listen. You can't persuade me. You're just wasting your breath.
See also: breath, waste

waste (one's) breath

To gain or accomplish nothing by speaking.
See also: breath, waste