The rare daily word game sweeping the globe. Find what's hidden in plain sight.
FERMION
Definition of FERMION
noun
Any elementary or composite particle that has half-integer spin and thus obeys Fermi–Dirac statistics and the Pauli exclusion principle (equivalently, a particle for which the wavefunction of any system of identical such particles changes sign whenever two are swapped); a baryon, a lepton or a quark; any such particle or any composite particle composed of fermions.
Wiktionary · CC BY-SA
Where it comes from
From Fermi + -on. Named after Italian-American physicist Enrico Fermi. Coined by English physicist Paul Dirac in 1945 in a lecture titled "Developments in Atomic Theory".
Etymology via Wiktionary (CC BY-SA).
Word DNA
Line of descent
- Italian
- English
One recorded step before English.
Deepest traced root
10th
of 59 source languages in OUTLIER
1.7%
of traced words share this origin (1,294)
branch · 12.9% of traced words
How it is built
Same root, FERMION · 2 relatives 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.
FERMION in OUTLIER
Players have found it on 28 boards so far. 34 players have found it across Outlier's history.
It first turned up on Day 37, 26 June 2026. The most recent board was Day 154, 21 October 2026. Nobody has seen it on a board for 1 day.
First found by a player on Day 37, 26 June 2026.
Built from these letters
FERMION starts with F and ends with N. Sorted, its letters read EFIMNOR - the shape to hunt for when the grid is scrambled. No letter is used twice, which makes it an isogram.
Also seen on Day 37
Could you have found FERMION?
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 37 - and most players walked straight past it.
Play today's OUTLIER