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

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n. The state or quality of being angry and obstinate.

n. The state or quality of being poorly-ventilated and close.

n. The result or product of being stuffy.

n. The quality of being stuffy.

n. The state or property of being stuffy, close, or musty: as, the stuffiness of a room.

n. The condition of being stuffed, or stuffed up, as by a cold.

n. dull and pompous gravity

n. state of obstruction or stoppage or air in the nose or throat

n. the quality of being close and poorly ventilated

"Wooden Shoon, 'as an appropriate introduction to a tragedy the scene of which was laid in Nineveh; the house seemed fairly full, and the air was heavy with that peculiar smell, a sort of doubtfully aromatic stuffiness, which is so grateful to the nostrils of playgoers."

soberness    sombreness    sobriety    graveness    somberness   

stuffily    stuffy   

frowst   

sultriness    sottishness    excrescence    pricetag    tittering