adjective Having a high degree of heat or a high temperature. (it was hot inside the hall) (of food) containing or consisting of pungent spices or peppers which produce a burning sensation when tasted. (a very hot dish cooked with green chili) Passionately enthusiastic, eager, or excited. (the idea had been nurtured in his hot imagination) Involving much activity, debate, or intense feeling. Knowledgeable or skillful. Difficult to deal with.