8 letters · 16 points in Scrabble
noun a bitter alkaloid found in coffee and tea that is responsible for their stimulating effects
originBorrowed from French caféine, from café (“coffee”), or German Caffein, Kaffein (cp. Coffein, Koffein), from Kaffee (“coffee”) (cp. Kaffe, Koffee, Koffe), or Italian caffè (“coffee”) + -ine.
Etymology from Wiktionary, CC BY-SA 3.0