STUFFY
stodgy, stuffy
(adjective) excessively conventional and unimaginative and hence dull; “why is the middle class so stodgy, so utterly without a sense of humor?”; “a stodgy dinner party”
stuffy
(adjective) affected with a sensation of stoppage or obstruction; “a stuffy feeling in my chest”
airless, close, stuffy, unaired
(adjective) lacking fresh air; “a dusty airless attic”; “the dreadfully close atmosphere”; “hot and stuffy and the air was blue with smoke”
Source: WordNet® 3.1
Adjective
stuffy (comparative stuffier, superlative stuffiest)
Poorly ventilated; partially plugged.
Stout; mettlesome; resolute.
(US) Angry and obstinate; sulky.
Boring, uninteresting, over-formal, pompous, very conventional.
(Scotland) Stout; sturdy.
Noun
stuffy (plural stuffies)
(US, Canada, colloquial, often, childish) synonym of stuffed toy
Source: Wiktionary
Stuff"y, a.
1. Stout; mettlesome; resolute. [Scot.] Jamieson.
2. Angry and obstinate; sulky. [U. S.]
3. Ill-ventilated; close.
Source: Webster’s Unabridged Dictionary 1913 Edition