Etymology: Middle English, from Old English hāt; akin to Old High German heiz hot, Lithuanian kaisti to get hot
Date: before 12th century
1 a: having a relatively high temperature b: capable of giving a sensation of heat or of burning, searing, or scalding c: having heat in a degree exceeding normal body heat 2 a:violent, stormy<a hot temper><a hot battle>; also:angry<got hot about the remark>b (1): sexually excited or receptive (2):sexyc:eager, zealous<hot for reform>dof jazz: emotionally exciting and marked by strong rhythms and free melodic improvisations 3: having or causing the sensation of an uncomfortable degree of body heat <hot and tired><it's hot in here> 4 a: newly made :fresh<a hot scent><hot off the press>b: close to something sought <hot on the trail> 5 a: suggestive of heat or of burning or glowing objects <hot colors>b:pungent, peppery 6 a: of intense and immediate interest <some hot gossip>b: unusually lucky or favorable <on a hot streak>c: temporarily capable of unusual performance (as in a sport) d: currently popular or in demand <a hot commodity>e: very good <a hot idea><not feeling too hot>f:absurd, unbelievable<wants to fight the champ? that's a hot one> 7 a: electrically energized especially with high voltage b:radioactive; also: dealing with radioactive material cof an atom or molecule: being in an excited state 8 a: recently and illegally obtained <hot jewels>b: wanted by the police; also: unsafe for a fugitive 9:fast<a hot new fighter plane><a hot lap around the track>
— hot·nessnoun
— hot·tish\ˈhä-tish\adjective
— hot under the collar: extremely exasperated or angry