The rare daily word game sweeping the globe. Find what's hidden in plain sight.
SULFIDE
Definition of SULFIDE
noun
Any compound of sulfur and a metal or other electropositive element or group.
Wiktionary · CC BY-SA
Where it comes from
From sulf(ur) + -ide.
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.
SULFIDE in OUTLIER
Players have found it on 26 boards so far. 40 players have found it across Outlier's history.
It first turned up on Day 7, 28 May 2026. The most recent board was Day 120, 17 September 2026. It was on the latest finished board.
First ever to find it
on Day 7, 28 May 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
SULFIDE starts with S and ends with E. Sorted, its letters read DEFILSU - the shape to hunt for when the grid is scrambled. No letter is used twice, which makes it an isogram.
Words that start SULFID
Its neighbours in the OUTLIER dictionary - shortest first.
Could you have found SULFIDE?
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 7 - and most players walked straight past it.
Play today's OUTLIER