The rare daily word game sweeping the globe. Find what's hidden in plain sight.
TREFOIL
Definition of TREFOIL
noun
Any of several plants of the pea family, having compound, trifoliate leaves; especially one of the genus Trifolium.
Wiktionary · CC BY-SA
Where it comes from
From Middle English trefoil, from Old French trifoil, trefeul, from Latin trifolium, from tri- (“three”) + folium (“leaf”).
Etymology via Wiktionary (CC BY-SA).
Word DNA
Line of descent
3 recorded generations before English.
Deepest traced root
1st
of 59 source languages in OUTLIER
30.7%
of traced words share this origin (24,343)
branch · 30.7% of traced words
How it is built
Same root, TREFOIL · 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.
TREFOIL in OUTLIER
Players have found it on 57 boards so far. 145 players have found it across Outlier's history.
It first turned up on Day 54, 13 July 2026. The most recent board was Day 160, 27 October 2026. Nobody has seen it on a board for 1 day.
First ever to find it
on Day 54, 13 July 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
TREFOIL starts with T and ends with L. Sorted, its letters read EFILORT - the shape to hunt for when the grid is scrambled. No letter is used twice, which makes it an isogram.
Same letters, different word
One other word uses exactly these letters. Worth knowing at the board: an anagram fits a grid the same way.
Also seen on Day 54
Could you have found TREFOIL?
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 54 - and most players walked straight past it.
Play today's OUTLIER