9 letters · 14 points in Scrabble
verb darken with a brownish tinge, as of insect wings
originThe verb is first attested in 1650, the adjective in 1826; borrowed from Latin īnfuscātus, perfect passive participle of īnfuscō (see -ate (verb-forming suffix) and -ate (adjective-forming suffix)), from in- (“in”) + fuscō (“to make dark”), from fuscus (“dark”).
Etymology from Wiktionary, CC BY-SA 3.0