This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Lacking sufficient ventilation; close.

adj. Having the respiratory passages blocked: a stuffy nose.

adj. Dull and boring: a stuffy lecture.

adj. Rigidly adhering to standards of conduct; strait-laced: "I went to one stuffy upper class dinner party on my first night & I go to another tonight” ( Evelyn Waugh).

adj. Poorly ventilated; partially plugged.

adj. Stout; mettlesome; resolute.

adj. Angry and obstinate; sulky.

adj. Boring, uninteresting, over-formal, pompous, very conventional.

n. A stuffed animal or other plush toy.

adj. Stout; mettlesome; resolute.

adj. Angry and obstinate; sulky.

adj. Ill-ventilated; close.

Close, as if from being stuffed and unaired; musty from closeness; oppressive to the head or lungs.

Stuffed out; fat: said of a person.

Affected as if by stuffing; muffled: said of the voice or speech.

Made of good stuff; stout; resolute; mettlesome.

Angry; sulky: obstinate.

adj. lacking fresh air

adj. affected with a sensation of stoppage or obstruction

adj. excessively conventional and unimaginative and hence dull

"While other college students are in stuffy classrooms, about a dozen are earning credit tending a Vermont farm."

unventilated    obstructed    conventional   

stuffiness    stuffily   

stuffiest    stuffier   

stout    mettlesome    resolute    sulky    ill-ventilated    close    closet   

Fluffy    buffy    fluffy    huffy    puffy    scruffy    toughie   

dank    cramp    chilly    cozy    smelly    dingy    humid    low-ceilinged    claustrophobic    dusty