The rare daily word game sweeping the globe. Find what's hidden in plain sight.
EPSILON
Definition of EPSILON
noun
The fifth letter of the Greek alphabet, ε or Ε, preceded by delta (Δ, δ) and followed by zeta (Ζ, ζ).
Wiktionary · CC BY-SA
Where it comes from
From Ancient Greek ἒ ψιλόν (è psilón, “simple Ε”).
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
12.2%
of traced words share this origin (9,700)
branch · 12.2% of traced words
How it is built
Same root, EPSILON · 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.
EPSILON in OUTLIER
Players have found it on 56 boards so far. 104 players have found it across Outlier's history.
It first turned up on Day 7, 28 May 2026. The most recent board was Day 160, 27 October 2026. It was on the latest finished board.
First found by a player on Day 7, 28 May 2026.
Built from these letters
EPSILON starts with E and ends with N. Sorted, its letters read EILNOPS - 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.
Also seen on Day 7
Could you have found EPSILON?
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 7 - and most players walked straight past it.
Play today's OUTLIER