Don't waste your breath arguing with him.
waste breath
idiomTo speak in a manner which is needless or futile; in discussion or argument to make points which are not appreciated or heeded.
I tried to explain why the new policy was unfair, but I realized I was just wasting my breath.
The activist knew that debating the stubborn politician was merely wasting her breath, yet she felt compelled to speak her truth regardless.
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breath of fresh air
Something relieving, refreshing, or new.
- 02
don't hold your breath
Don't wait. Said cynically to suggest that what has just been mentioned is unlikely to happen soon or at all.
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draw one's last breath
To die.
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hold one's breath
To wait expectantly for something to happen soon.
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save one's breath
To refrain from speech; to be quiet, especially where it would have no useful effect to speak.
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take a breath
to inhale and subsequently exhale air
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take a deep breath
To inhale deeply.
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take someone's breath away
To make a person feel emotionally moved in a pleasant way.