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Related to breather: engine breather
One who is intensely and aggressively passionate and fiercely determined. Likened to a dragon or other beast able to shoot streams of fire from its mouth. The company's new boss proved to be a real fire-breather, and in just a few months she turned a once-middling local business into a national powerhouse.
take a breather
To take a short pause or hiatus (from something). You can go ahead on the hike if you want, I'm going to stop here and take a breather. The senator is taking a breather from his campaign to spend some time with his family.
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.
n. a rest period; a lull. (A chance to catch one’s breath.) As soon as we’ve had a breather, it’s back to work.
n. a stupid-acting person. I always end up with a mouth-breather on a blind date.