mouthbreather → άτομο που αναπνέει από το στόμα, χαζός, βλάκας, αγροίκος, άξεστος, χωριάτης, βλάχος, βλαχαδερό
mouth-breather
mouthbreather
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.
https://en.wiktionary.org/wiki/mouth_breather#English