The rare daily word game sweeping the globe. Find what's hidden in plain sight.
PERIOST
Definition of PERIOST
noun
Synonym of periosteum.
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.
PERIOST in OUTLIER
Players have found it on 1 board so far.
It first turned up on Day 114, 11 September 2026. Nobody has seen it on a board for 5 days.
First ever to find it
on Day 114, 11 September 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
PERIOST starts with P and ends with T. Sorted, its letters read EIOPRST - the shape to hunt for when the grid is scrambled. No letter is used twice, which makes it an isogram.
Same letters, different word
5 other words use exactly these letters. Worth knowing at the board: an anagram fits a grid the same way.
Words that start PERIOS
Its neighbours in the OUTLIER dictionary - shortest first.
Could you have found PERIOST?
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 114 - and most players walked straight past it.
Play today's OUTLIER