The rare daily word game sweeping the globe. Find what's hidden in plain sight.
CAESIUM
Definition of CAESIUM
noun
The chemical element (symbol Cs) with an atomic number of 55. It is a soft, gold-colored, highly reactive alkali metal.
Wiktionary · CC BY-SA
Where it comes from
From Latin caesius (“sky-blue”), in reference to the radiation spectra, + -ium.
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.
CAESIUM in OUTLIER
Players have found it on 31 boards so far. 50 players have found it across Outlier's history.
It first turned up on Day 12, 1 June 2026. The most recent board was Day 119, 16 September 2026. It was on the latest finished board.
First found by a player on Day 12, 1 June 2026.
Built from these letters
CAESIUM starts with C and ends with M. Sorted, its letters read ACEIMSU - the shape to hunt for when the grid is scrambled. No letter is used twice, which makes it an isogram.
Also seen on Day 12
Could you have found CAESIUM?
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 12 - and most players walked straight past it.
Play today's OUTLIER