12 letters · 15 points in Scrabble
originEtymology tree English involution Proto-Italic *-ālis Latin -ālisbor. Old French -albor. ▲ Latin -ālis Old French -elbor. ▲ Latin -ālisbor. Middle English -al English -al English involutional From involution + -al.
Etymology from Wiktionary, CC BY-SA 3.0