mouth breather

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mouth breather

Someone who is dimwitted, foolish, or stupid; someone of low or stunted intelligence. Used as an insult. That bully is a such a mouth breather, I bet he has the IQ of a rock.
See also: breather, mouth

mouth-breather

n. a stupid-acting person. I always end up with a mouth-breather on a blind date.
References in periodicals archive ?
If it had come down to a choice, they knew that the males aged 25-plus who were the target market for paying to see a fight on Sky Box Office would have been massively outnumbered by the women, teenagers, children, mouthbreathers and mutants eagerly awaiting the latest instalment of a nonsense talent show.
The show and this website reveal how "he learned to slavishly love mouthbreathers, 60-hour weeks and the cult of personality that is Jeff Bezos".