The rare daily word game sweeping the globe. Find what's hidden in plain sight.
PERICLASE
Definition of PERICLASE
noun
A cubic crystalline form of magnesium oxide (MgO).
Wiktionary · CC BY-SA
Word DNA
PERICLASE inherits its ancestry from its root, MAGNESIUM.
Line of descent
- Ancient Greek
- Latin
- English
2 recorded generations before English.
Deepest traced root
3rd
of 59 source languages in OUTLIER
12.4%
of traced words share this origin (10,094)
branch · 12.4% of traced words
How it is built
Same root, MAGNESIUM · 5 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.
PERICLASE in OUTLIER
Players have found it on 12 boards so far.
It first turned up on Day 54, 13 July 2026. The most recent board was Day 149, 16 October 2026. Nobody has seen it on a board for 14 days.
First ever to find it
on Day 54, 13 July 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
PERICLASE starts with P and ends with E. Sorted, its letters read ACEEILPRS - the shape to hunt for when the grid is scrambled. E appears more than once.
Same letters, different word
4 other words use exactly these letters. Worth knowing at the board: an anagram fits a grid the same way.
Words that start PERICL
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 54
Could you have found PERICLASE?
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 54 - and most players walked straight past it.
Play today's OUTLIER