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).
Word DNA
Line of descent
- Latin
- English
One recorded step before English.
Deepest traced root
1st
of 59 source languages in OUTLIER
30.6%
of traced words share this origin (25,330)
branch · 30.6% of traced words
How it is built
Same root, CAESIUM · 3 relatives in the game
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 51 boards so far. 80 players have found it across Outlier's history.
It first turned up on Day 12, 1 June 2026. The most recent board was Day 165, 1 November 2026. Nobody has seen it on a board for 1 day.
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