The rare daily word game sweeping the globe. Find what's hidden in plain sight.
DIATOMACEOUS
Definition of DIATOMACEOUS
adjective
Of, pertaining to, or containing diatoms or their coverings.
Wiktionary · CC BY-SA
Where it comes from
From diatom + -aceous.
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.
DIATOMACEOUS in OUTLIER
Players have found it on 19 boards so far. 41 players have found it across Outlier's history.
It first turned up on Day 27, 16 June 2026. The most recent board was Day 97, 25 August 2026. Nobody has seen it on a board for 1 day.
First found by a player on Day 27, 16 June 2026.
Built from these letters
DIATOMACEOUS starts with D and ends with S. Sorted, its letters read AACDEIMOOSTU - the shape to hunt for when the grid is scrambled. A and O appear more than once.
Also seen on Day 27
Could you have found DIATOMACEOUS?
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