The rare daily word game sweeping the globe. Find what's hidden in plain sight.
DIOPTERS
Definition of DIOPTERS
noun
plural of diopter
noun
A unit of measure of the power of a lens or mirror, equal to the reciprocal of its focal length in meters. Myopia is diagnosed and measured in diopters.
Wiktionary · CC BY-SA
Word DNA
DIOPTERS inherits its ancestry from its root, DIOPTER.
Line of descent
- Ancient Greek
- Latin
- English
2 recorded generations before English.
Deepest traced root
2nd
of 58 source languages in OUTLIER
12.6%
of traced words share this origin (3,672)
branch · 12.6% of traced words
How it is built
Same root, DIOPTER · 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.
DIOPTERS in OUTLIER
Players have found it on 46 boards so far. 73 players have found it across Outlier's history.
It first turned up on Day 26, 15 June 2026. The most recent board was Day 147, 14 October 2026. It was on the latest finished board.
First ever to find it
on Day 26, 15 June 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
DIOPTERS starts with D and ends with S. Sorted, its letters read DEIOPRST - the shape to hunt for when the grid is scrambled. No letter is used twice, which makes it an isogram.
Same letters, different word
8 other words use exactly these letters. Worth knowing at the board: an anagram fits a grid the same way.
Also seen on Day 26
Could you have found DIOPTERS?
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 26 - and most players walked straight past it.
Play today's OUTLIER