The rare daily word game sweeping the globe. Find what's hidden in plain sight.
CYTOSINE
Definition of CYTOSINE
noun
A heterocyclic base, 4-aminopyrimidin-2(1H)-one, which pairs with guanine in DNA and RNA (by means of three hydrogen bonds).
Wiktionary · CC BY-SA
Where it comes from
After German Cytosin, equivalent to Ancient Greek κύτος (kútos) + -ine. Cytosine was discovered and named by the German biochemists Albrecht Kossel and Albert Neumann in 1894 when it was hydrolyzed from calf thymus tissues.
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.
CYTOSINE in OUTLIER
Players have found it on 36 boards so far. 64 players have found it across Outlier's history.
It first turned up on Day 30, 19 June 2026. The most recent board was Day 110, 7 September 2026. Nobody has seen it on a board for 1 day.
First ever to find it
on Day 30, 19 June 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
CYTOSINE starts with C and ends with E. Sorted, its letters read CEINOSTY - the shape to hunt for when the grid is scrambled. No letter is used twice, which makes it an isogram.
Words that start CYTOSI
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 30
Could you have found CYTOSINE?
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 30 - and most players walked straight past it.
Play today's OUTLIER