7 letters · 10 points in Scrabble
noun someone who denies the existence of god
adjective related to or characterized by or given to atheism
originFrom Middle French athéiste (athée + -iste), from Latin atheos, from Ancient Greek ἄθεος (átheos, “godless, without god”), from ἀ- (a-, “without”) + θεός (theós, “god”).
Etymology from Wiktionary, CC BY-SA 3.0