7 letters · 12 points in Scrabble
adjective habitually clean
adverb in an adroit manner
adverb in a manner that minimizes dirt and pollution
originFrom Middle English clenly, clenliche, clanly, from Old English clǣnlīċ (“cleanly, pure, excellent”), equivalent to clean + -ly.
Etymology from Wiktionary, CC BY-SA 3.0