11 letters · 20 points in Scrabble
adjective having an unpleasant sound; - John McCarten
originAdapted borrowing of Ancient Greek κακόφωνος (kakóphōnos) + -ous, from κακός (kakós, “bad”) + -φωνος (-phōnos, “sounding”). By surface analysis, caco- + -phonous.
Etymology from Wiktionary, CC BY-SA 3.0