The rare daily word game sweeping the globe. Find what's hidden in plain sight.
OPSIN
Definition of OPSIN
noun
Any of a group of light-sensitive proteins in the retina.
Wiktionary · CC BY-SA
Where it comes from
Shortened form of rhodopsin. From Ancient Greek ὄψις (ópsis, “sight”) + -in.
Etymology via Wiktionary (CC BY-SA).
Word DNA
Line of descent
- Ancient Greek
- English
One recorded step before English.
Deepest traced root
3rd
of 59 source languages in OUTLIER
12.4%
of traced words share this origin (10,280)
branch · 12.4% 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.
OPSIN in OUTLIER
Players have found it on 20 boards so far. 21 players have found it across Outlier's history.
It first turned up on Day 46, 5 July 2026. The most recent board was Day 157, 24 October 2026. Nobody has seen it on a board for 9 days.
First found by a player on Day 46, 5 July 2026.
Built from these letters
OPSIN starts with O and ends with N. Sorted, its letters read INOPS - 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 OPSIN
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 46
Could you have found OPSIN?
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 46 - and most players walked straight past it.
Play today's OUTLIER