The story
Fanciful extension of hot.
First known use, by meaning
- from 20th c. Flashy, vivacious, attractive, desirable.
- from 20th c. Exciting, lively.
- 1930s Of or relating to a Harlem style of hot rhythm music, especially jazz.
- from 20th c. An exclamation of excitement, delight or high approval.
Etymology from Wiktionary, CC BY-SA 4.0.