The rare daily word game sweeping the globe. Find what's hidden in plain sight.
HYDROXIDE
Definition of HYDROXIDE
noun
A univalent anion (OH) based on the hydroxyl functional group.
Wiktionary · CC BY-SA
Where it comes from
From hydro- + oxide.
Etymology via Wiktionary (CC BY-SA).
Word DNA
How it is built
Same root, HYDROXIDE · 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.
HYDROXIDE in OUTLIER
Players have found it on 1 board so far. 24 players have found it across Outlier's history.
It first turned up on Day 131, 28 September 2026. It was on the latest finished board.
First ever to find it
on Day 131, 28 September 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
HYDROXIDE starts with H and ends with E. Sorted, its letters read DDEHIORXY - the shape to hunt for when the grid is scrambled. D appears more than once. It uses X - among the least common letters in written English.
Words that start HYDROX
Its neighbours in the OUTLIER dictionary - shortest first.
Could you have found HYDROXIDE?
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 131 - and most players walked straight past it.
Play today's OUTLIER