The rare daily word game sweeping the globe. Find what's hidden in plain sight.
PTERIDOLOGY
Definition of PTERIDOLOGY
noun
The scientific study of ferns and other pteridophytes.
Wiktionary · CC BY-SA
Where it comes from
From pterido- + -logy.
Etymology via Wiktionary (CC BY-SA).
Word DNA
How it is built
Same root, PTERIDOLOGY · 1 relative in the game
OUTLIER scores every word on how unusual it is, and that number is not published. Working it out at the board is the game.
PTERIDOLOGY in OUTLIER
Players have found it on 21 boards so far. 28 players have found it across Outlier's history.
It first turned up on Day 11, 31 May 2026. The most recent board was Day 152, 19 October 2026. Nobody has seen it on a board for 4 days.
First found by a player on Day 11, 31 May 2026.
Built from these letters
PTERIDOLOGY starts with P and ends with Y. Sorted, its letters read DEGILOOPRTY - the shape to hunt for when the grid is scrambled. O appears more than once.
Same letters, different word
One other word uses exactly these letters. Worth knowing at the board: an anagram fits a grid the same way.
Words that start PTERIDO
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 11
Could you have found PTERIDOLOGY?
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 11 - and most players walked straight past it.
Play today's OUTLIER