Entry 3 senses Webster, 1913

Stuffy

/stŭf'-ē/ · Stuff·y · IPA /ˈstʌfi/

01 a. Stout; mettlesome; resolute.

1.
Stout; mettlesome; resolute.[Scot.]
2.
Angry and obstinate; sulky.[U. S.]
3.
Ill-ventilated; close.