The rare daily word game sweeping the globe. Find what's hidden in plain sight.
SIALON
Definition of SIALON
noun
Any of a class of strong refractory ceramics, based on the elements silicon, aluminium, oxygen and nitrogen, that are highly resistant to heat and corrosion.
Wiktionary · CC BY-SA
Where it comes from
From the chemical symbols Si, Al, O, N.
Etymology via Wiktionary (CC BY-SA).
Word DNA
How it is built
OUTLIER scores every word on how unusual it is, and that number is not published. Working it out at the board is the game.
SIALON in OUTLIER
Players have found it on 1 board so far.
It first turned up on Day 167, 3 November 2026. Nobody has seen it on a board for 5 days.
First ever to find it
on Day 167, 3 November 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
SIALON starts with S and ends with N. Sorted, its letters read AILNOS - the shape to hunt for when the grid is scrambled. No letter is used twice, which makes it an isogram.
Same letters, different word
2 other words use exactly these letters. Worth knowing at the board: an anagram fits a grid the same way.
Words that start SIALON
Its neighbours in the OUTLIER dictionary - shortest first.
Could you have found SIALON?
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 167 - and most players walked straight past it.
Play today's OUTLIER