The rare daily word game sweeping the globe. Find what's hidden in plain sight.
CASEIN
Definition of CASEIN
noun
A protein present in both milk and in the seeds of leguminous plants.
Wiktionary · CC BY-SA
Where it comes from
From French caséine, formed from Latin cāseus (“cheese”) + -ine.
Etymology via Wiktionary (CC BY-SA).
Word DNA
Line of descent
2 recorded generations before English.
Deepest traced root
1st
of 58 source languages in OUTLIER
33%
of traced words share this origin (9,478)
branch · 33% of traced words
How it is built
Same root, CASEIN · 1 relative 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.
CASEIN in OUTLIER
Players have found it on 37 boards so far. 78 players have found it across Outlier's history.
It first turned up on Day 22, 11 June 2026. The most recent board was Day 142, 9 October 2026. It was on the latest finished board.
First found by a player on Day 22, 11 June 2026.
Built from these letters
CASEIN starts with C and ends with N. Sorted, its letters read ACEINS - the shape to hunt for when the grid is scrambled. No letter is used twice, which makes it an isogram.
Same letters, different word
2 other words use exactly these letters. Worth knowing at the board: an anagram fits a grid the same way.
Words that start CASEIN
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 22
Could you have found CASEIN?
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 22 - and most players walked straight past it.
Play today's OUTLIER