12 letters · 18 points in Scrabble
noun (dentistry) a condition in which the opposing teeth do not mesh normally
originFirst attested in 1888. Formed as mal- (“wrong”, “improper(ly)”: ultimately from the Classical Latin male, “badly”, “wrongly”; from malus, “bad”; compare the ben- element in benocclusion) + occlusion (“alignment of the teeth in closed jaws”).
Etymology from Wiktionary, CC BY-SA 3.0