The rare daily word game sweeping the globe. Find what's hidden in plain sight.
COUMARIN
Definition of COUMARIN
noun
The bicyclic aromatic compound 1,2-benzopyrone or any of its derivatives.
Wiktionary · CC BY-SA
Where it comes from
From coumarou (“tonka bean, Dipteryx odorata (syn. Coumarouna odorata)”) + -in, or from French coumarine.
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.
COUMARIN in OUTLIER
Players have found it on 12 boards so far. 15 players have found it across Outlier's history.
It first turned up on Day 27, 16 June 2026. The most recent board was Day 108, 5 September 2026. Nobody has seen it on a board for 3 days.
First found by a player on Day 27, 16 June 2026.
Built from these letters
COUMARIN starts with C and ends with N. Sorted, its letters read ACIMNORU - the shape to hunt for when the grid is scrambled. No letter is used twice, which makes it an isogram.
Same letters, different word
One other word uses exactly these letters. Worth knowing at the board: an anagram fits a grid the same way.
Words that start COUMAR
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 27
Could you have found COUMARIN?
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 27 - and most players walked straight past it.
Play today's OUTLIER