stuffy

Short definition from Wiktionary

Adjective

1. 1
   Poorly ventilated; partially plugged.
2. 2
   Uncomfortably warm without sufficient air circulation.
3. 3
   Stout; mettlesome; resolute.
4. 4
   Angry and obstinate; sulky.
5. 5
   Boring, old-fashioned, uninteresting, over-formal, pompous, very conventional.
6. 6
   Stout; sturdy.

Noun

1. 1
   Synonym of stuffed toy.