- 1(of a building, room, etc.) warm in an unpleasant way and without enough fresh air a stuffy room It gets very hot and stuffy in here in summer.
- 2(informal) (disapproving) very serious, formal, boring, or old-fashioned a stuffy, formal family plain, stuffy clothes
- 3 if you have a stuffy nose, your nose is blocked because you have a cold
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