8 letters · 12 points in Scrabble
verb make dirty or spotty, as by exposure to air; also used metaphorically
verb spot, stain, or pollute
adjective morally blemished; stained or impure
originFirst attested during the last quarter of the 15th century, in Middle English; inherited from Middle English maculaten (“to spoil, polute”), borrowed from Latin maculātus, perfect passive participle of maculō (“to spot”), see -ate (verb-forming suffix) and -ate (adjective-forming suffix).
Etymology from Wiktionary, CC BY-SA 3.0