The rare daily word game sweeping the globe. Find what's hidden in plain sight.
HYDRATION
Definition of HYDRATION
noun
The incorporation of water molecules into a complex with those of another compound.
Wiktionary · CC BY-SA
Where it comes from
From hydrate + -ion. The programming terms come from the concept of data lake.
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.
HYDRATION in OUTLIER
Players have found it on 25 boards so far. 41 players have found it across Outlier's history.
It first turned up on Day 16, 5 June 2026. The most recent board was Day 93, 21 August 2026. Nobody has seen it on a board for 4 days.
First found by a player on Day 16, 5 June 2026.
Built from these letters
HYDRATION starts with H and ends with N. Sorted, its letters read ADHINORTY - the shape to hunt for when the grid is scrambled. No letter is used twice, which makes it an isogram.
Words that start HYDRAT
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 16
Could you have found HYDRATION?
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 16 - and most players walked straight past it.
Play today's OUTLIER