11 letters · 18 points in Scrabble
adjective unrestrained, especially with regard to feelings
adjective presumptuously arrogant; ; - S.V.Benet; - NY Times
originFrom Middle English overweninge, equivalent to overween + -ing. Cognate with obsolete Dutch overwanig, overwaand (“presumptuous; cocky; conceited”).
Etymology from Wiktionary, CC BY-SA 3.0