The rare daily word game sweeping the globe. Find what's hidden in plain sight.
ACYL
Definition of ACYL
noun
Any of class of organic radicals, RCO-, formed by the removal of a hydroxyl group from a carboxylic acid.
Wiktionary · CC BY-SA
Where it comes from
Ultimately from Latin ac(eō) + -yl.
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.
ACYL in OUTLIER
Players have found it on 6 boards so far.
It first turned up on Day 51, 10 July 2026. The most recent board was Day 117, 14 September 2026. Nobody has seen it on a board for 2 days.
First ever to find it
on Day 51, 10 July 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
ACYL starts with A and ends with L. Sorted, its letters read ACLY - 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 ACYL
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 51
Could you have found ACYL?
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 51 - and most players walked straight past it.
Play today's OUTLIER