Meaning

adjective used of physical heat; having a high or higher than desirable temperature or giving off heat or feeling or causing a sensation of heat or burning

adjective characterized by violent and forceful activity or movement; very intense

adjective extended meanings; especially of psychological heat; marked by intensity or vehemence especially of passion or enthusiasm

originFrom Middle English hot, hat, from Old English hāt (“hot”), from Proto-West Germanic *hait, from Proto-Germanic *haitaz (“hot”), from Proto-Indo-European *keHy- (“hot; to heat”). Cognate with Scots hate, hait (“hot”), North Frisian hiet (“hot”), Saterland Frisian heet (“hot”), West Frisian hjit (“hot”), Dutch heet (“hot”), German Low German heet (“hot”), German heiß, heiss (“hot”), Danish hed…

Etymology from Wiktionary, CC BY-SA 3.0