to look angry and refuse to speak or smile because you want people to know that you are upset about something 面有愠色；生闷气 He went off to sulk in his room. 他回到自己的房间，生起闷气来。 🔊🔊 He was still sulking about the break-up of his band. 他仍在为乐队的解散而生闷气。 She sulked all the way to the theatre. 她一直迷恋到剧院。
Word Originlate 18th cent.: perhaps a back-formation from sulky.