The rare daily word game sweeping the globe. Find what's hidden in plain sight.
CAFFEINE
Definition of CAFFEINE
noun
An alkaloid, C8H10N4O2, found naturally in tea and coffee plants, which acts as a mild stimulant on the central nervous system.
Wiktionary · CC BY-SA
Where it comes from
Borrowed 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 via Wiktionary (CC BY-SA).
OUTLIER scores every word on how unusual it is, and that number is not published. Working it out at the board is the game.
CAFFEINE in OUTLIER
Players have found it on 1 board so far.
It first turned up on Day 117, 14 September 2026. Nobody has seen it on a board for 4 days.
First ever to find it
on Day 117, 14 September 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
CAFFEINE starts with C and ends with E. Sorted, its letters read ACEEFFIN - the shape to hunt for when the grid is scrambled. F and E appear more than once, including a double letter.
Words that start CAFFEI
Its neighbours in the OUTLIER dictionary - shortest first.
Could you have found CAFFEINE?
OUTLIER is a daily word game. One grid, the same grid for everybody, and the words nobody else spots are the ones that pay. This word was on Day 117 - and most players walked straight past it.
Play today's OUTLIER