mouth breather

Oral air inhaler

A mouth breather is literally someone who breathes through their mouth rather than their nose, often due to congestion or anatomical issues.

The term has become a common insult suggesting stupidity or social awkwardness—the image of someone slack-jawed and vacant: Don't be such a mouth breather.

The pejorative sense dominates casual usage.

insult

idiot

Foolish, senseless person

dimwit · dunce · blockhead · knucklehead · oaf · dope · fool · imbecile · nincompoop · buffoon

medical

nasal obstruction

Blocked breathing passage

adenoids · nasal polyps · sinusitis · sleep apnea · snoring · rhinitis · asthma · tonsillitis · CPAP · chronic

Categories
Opposites
perceived intelligence/sophistication

mouth breathergenius

Person of rare brilliance

intellectual · brainiac · sophisticate · sharp mind · quick wit

social sophistication

mouth breathersophisticate

Worldly, cultured person

cosmopolitan · man of the world · woman of the world · highbrow · connoisseur

Family

mouth, breather, mouths, mouthed, mouthing, mouthy, breathe, breath, breaths

Familiarity
Top 200,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Negative · Everyday, not technical · Rated PG