stuffy

Universal Words adjective (stuffier, stuffiest) 1 (of a building, room, etc.) warm in an unpleasant way and without enough fresh air: a stuffy room / atmosphere * 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 stuffiness noun [U]