The rare daily word game sweeping the globe. Find what's hidden in plain sight.
CARBOXYL
Definition of CARBOXYL
noun
A univalent functional group consisting of a carbonyl and a hydroxyl functional group (-CO.OH); characteristic of carboxylic acids.
Wiktionary · CC BY-SA
Where it comes from
Blend of carbonyl + hydroxyl.
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.
CARBOXYL in OUTLIER
Players have found it on 3 boards so far. 15 players have found it across Outlier's history.
It first turned up on Day 87, 15 August 2026. The most recent board was Day 105, 2 September 2026. Nobody has seen it on a board for 4 days.
First ever to find it
on Day 87, 15 August 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
CARBOXYL starts with C and ends with L. Sorted, its letters read ABCLORXY - the shape to hunt for when the grid is scrambled. No letter is used twice, which makes it an isogram. It uses X - among the least common letters in written English.
Words that start CARBOX
Its neighbours in the OUTLIER dictionary - shortest first.
Could you have found CARBOXYL?
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 87 - and most players walked straight past it.
Play today's OUTLIER