The rare daily word game sweeping the globe. Find what's hidden in plain sight.
CYSTIDEAN
Definition of CYSTIDEAN
noun
Any of the †Cystidea, a class of extinct echinoderms, now known as the †Cystoidea.
Wiktionary · CC BY-SA
Where it comes from
†Cystidea + -an
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.
CYSTIDEAN in OUTLIER
Players have found it on 4 boards so far.
It first turned up on Day 52, 11 July 2026. The most recent board was Day 102, 30 August 2026. It was on the latest finished board.
First ever to find it
on Day 52, 11 July 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
CYSTIDEAN starts with C and ends with N. Sorted, its letters read ACDEINSTY - 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 CYSTID
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 52
Could you have found CYSTIDEAN?
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 52 - and most players walked straight past it.
Play today's OUTLIER