The rare daily word game sweeping the globe. Find what's hidden in plain sight.
OSTIOLE
Definition of OSTIOLE
noun
A small hole or opening through which certain fungi release their mature spores.
Wiktionary · CC BY-SA
Where it comes from
Borrowed from Latin ostiolum.
Etymology via Wiktionary (CC BY-SA).
Word DNA
Line of descent
- Latin
- English
One recorded step before English.
Deepest traced root
1st
of 58 source languages in OUTLIER
33.1%
of traced words share this origin (9,711)
branch · 33.1% of traced words
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.
OSTIOLE in OUTLIER
Players have found it on 15 boards so far. 13 players have found it across Outlier's history.
It first turned up on Day 33, 22 June 2026. The most recent board was Day 148, 15 October 2026. It was on the latest finished board.
First found by a player on Day 33, 22 June 2026.
Built from these letters
OSTIOLE starts with O and ends with E. Sorted, its letters read EILOOST - the shape to hunt for when the grid is scrambled. O appears more than once.
Same letters, different word
3 other words use exactly these letters. Worth knowing at the board: an anagram fits a grid the same way.
Words that start OSTIOL
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 33
Could you have found OSTIOLE?
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 33 - and most players walked straight past it.
Play today's OUTLIER