Word.ws English Dictionary

mouthbreather

mouthbreather is the alternative spelling of mouth breather.

Meaning of mouth breather

Noun

mouth breather (plural mouth breathers)

  1. A person who routinely inhales and exhales through the mouth, instead of through the nose.
    • Respirations cannot be recorded by this method, if the subject is a mouth breather (as no air flows by the thermistor in the nose).1967, Nancy J. Barron, “A Ride in the Human Centrifuge”, in American Journal of Nursing, volume 67, number 8, page 1654
  2. (derogatory, idiomatic, slang) A person who is boorish, stupid, or otherwise unattractive.
    • She's a philosophy major from Brown, now working retail at Niagara Falls, living in a trailer and working for a "mouth breather" of a boss.2004 March 12, Tim Goodman, “Trinkets are spirit guides in Fox's brilliant 'Wonderfalls'”, in San Francisco Chronicle, archived from the original on 20 Jan 2010

Forms of mouthbreather

pluralmouthbreathers

Questions about mouthbreather

What is mouthbreather the alternative spelling of?
Mouthbreather is the alternative spelling of mouth breather.

Words near mouthbreather in the dictionary

  1. mouthable
  2. mouthblown
  3. mouthbow
  4. mouthbows
  5. mouthbreathe
  6. mouthbreather
  7. mouthbreathers
  8. mouthbreathing
  9. mouthbreeder
  10. mouthbreeders
  11. mouthbrooder

Source and license

Adapted from Wiktionary: mouthbreather (page history and authors); mouth breather (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “mouthbreather.” Word.ws, https://word.ws/mouthbreather. Based on Wiktionary, CC BY-SA 4.0.