11 letters · 22 points in Scrabble
adjective unrestrained, especially with regard to feelings
adjective recklessly wasteful
originInherited from Middle English extravagaunt, from Middle French extravagant and its etymon Medieval Latin extravagans, present participle of extravagor (“to wander beyond”), from Latin extra (“beyond”) + vagor (“to wander, stray”).
Etymology from Wiktionary, CC BY-SA 3.0