The rare daily word game sweeping the globe. Find what's hidden in plain sight.
ORTHO
Definition of ORTHO
noun
An isomer of a benzene derivative having two substituents adjacent on the ring.
Wiktionary · CC BY-SA
Where it comes from
Ultimately from the prefix ortho-.
Etymology via Wiktionary (CC BY-SA).
Word DNA
How it is built
Same root, ORTHO · 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.
ORTHO in OUTLIER
Players have found it on 29 boards so far. 44 players have found it across Outlier's history.
It first turned up on Day 20, 9 June 2026. The most recent board was Day 149, 16 October 2026. It was on the latest finished board.
First ever to find it
on Day 20, 9 June 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
ORTHO starts with O and ends with O. Sorted, its letters read HOORT - 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 ORTHO
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 20
Could you have found ORTHO?
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 20 - and most players walked straight past it.
Play today's OUTLIER