The rare daily word game sweeping the globe. Find what's hidden in plain sight.
CLEITHRUM
Definition of CLEITHRUM
noun
A large bone in fishes, which extends upward from the base of the pectoral fin and anchors to the cranium above the gills, forming the posterior edge of the gill chamber.
Wiktionary · CC BY-SA
Where it comes from
From Ancient Greek κλεῖθρον (kleîthron).
Etymology via Wiktionary (CC BY-SA).
Word DNA
Line of descent
- Ancient Greek
- English
One recorded step before English.
Deepest traced root
3rd
of 59 source languages in OUTLIER
12.3%
of traced words share this origin (10,613)
branch · 12.3% of traced words
How it is built
Same root, CLEITHRUM · 3 relatives 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.
CLEITHRUM in OUTLIER
Players have found it on 1 board so far.
It first turned up on Day 175, 11 November 2026. Nobody has seen it on a board for 1 day.
First ever to find it
on Day 175, 11 November 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
CLEITHRUM starts with C and ends with M. Sorted, its letters read CEHILMRTU - the shape to hunt for when the grid is scrambled. No letter is used twice, which makes it an isogram.
Could you have found CLEITHRUM?
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 175 - and most players walked straight past it.
Play today's OUTLIER