7 letters · 14 points in Scrabble
noun a belligerent grouch
noun a reckless impetuous irresponsible person
originFrom hot + head. Compare English hotbrain (“a hothead”); Middle English hot-heorte, hat-heorte (“anger”), Old English hātheort (“furious, angry, irascible, passionate, ardent”, literally “hot-heart”).
Etymology from Wiktionary, CC BY-SA 3.0