The rare daily word game sweeping the globe. Find what's hidden in plain sight.
PERIOSTEAL
Definition of PERIOSTEAL
adjective
Of or pertaining to the periosteum.
Wiktionary · CC BY-SA
Where it comes from
From peri- + osteal.
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.
PERIOSTEAL in OUTLIER
Players have found it on 4 boards so far.
It first turned up on Day 48, 7 July 2026. The most recent board was Day 93, 21 August 2026. Nobody has seen it on a board for 26 days.
First ever to find it
on Day 48, 7 July 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
PERIOSTEAL starts with P and ends with L. Sorted, its letters read AEEILOPRST - the shape to hunt for when the grid is scrambled. E appears more than once.
Words that start PERIOS
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 48
Could you have found PERIOSTEAL?
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 48 - and most players walked straight past it.
Play today's OUTLIER