mouth breather

== English == === Alternative forms === mouth-breather, mouthbreather === Pronunciation === === Noun === mouth breather (plural mouth breathers) A person who routinely inhales and exhales through the mouth, instead of through the nose. (idiomatic, slang, derogatory) A person who is boorish, stupid, or otherwise unattractive. ==== Related terms ==== mouth-breathe mouthbreathing