7 letters · 12 points in Scrabble
noun a person motivated by irrational enthusiasm (as for a cause); --Winston Churchill
adjective marked by excessive enthusiasm for and intense devotion to a cause or idea
originFirst attested in 1525. Learned borrowing from Latin fānāticus (“of a temple, divinely inspired, frenzied”), from fānum (“temple”). Influenced by French fanatique.
Etymology from Wiktionary, CC BY-SA 3.0