adj. 25B6; adjective
a stuffy atmosphere : AIRLESS, close, musty, stale; Brit. frowsty; Brit. informal fuggy.
a stuffy young man : STAID, sedate, sober, prim, priggish, strait-laced, conformist, conservative, old-fashioned; informal square, straight, starchy, fuddy-duddy.
a stuffy nose : BLOCKED, stuffed up, bunged up.
airy, clear.