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Slang definitions & phrases for mouth-breather



A stupid person; moron; idiot: Some mouth-breather in the office told me it would be OK

[1970s+; fr the noisy breathing of an adenoidal idiot]

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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Examples from the Web for mouth-breather
Historical Examples
  • Note if the child is a mouth-breather, or gives other signs of adenoids or enlarged tonsils.

    Degeneracy Eugene S. Talbot
  • No child ever became a mouth-breather from choice, or until after a prolonged struggle to continue breathing through its nose.

    Preventable Diseases Woods Hutchinson

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