stifling /ˈstaɪflɪŋ/adjective 1noun 1forms 3 adjective1 •That stifles.The heat was stifling; it seemed hard to breathe and the exertion of rolling over on the bed seemed too much. noun1 •The act by which something is stifled.Every man who is destroyed must destroy himself. When a man stifles an admonition of conscience, he may fairly be said to sow the stiflings of conscience. — 1857 formsstiflings · more stifling · most stifling