The rare daily word game sweeping the globe. Find what's hidden in plain sight.
PERITONEUMS
Definition of PERITONEUMS
noun
plural of peritoneum
noun
In mammals, the serous membrane lining the cavity of the abdomen and that is folded over the viscera.
Wiktionary · CC BY-SA
Word DNA
PERITONEUMS inherits its ancestry from its root, PERITONEUM.
Line of descent
- Ancient Greek
- Latin
- English
2 recorded generations before English.
Deepest traced root
2nd
of 58 source languages in OUTLIER
12.6%
of traced words share this origin (3,702)
branch · 12.6% of traced words
How it is built
Same root, PERITONEUM · 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.
PERITONEUMS in OUTLIER
Players have found it on 13 boards so far. 12 players have found it across Outlier's history.
It first turned up on Day 25, 14 June 2026. The most recent board was Day 147, 14 October 2026. Nobody has seen it on a board for 2 days.
First ever to find it
on Day 25, 14 June 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
PERITONEUMS starts with P and ends with S. Sorted, its letters read EEIMNOPRSTU - the shape to hunt for when the grid is scrambled. E appears more than once.
Words that start PERITON
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 25
Could you have found PERITONEUMS?
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 25 - and most players walked straight past it.
Play today's OUTLIER