The rare daily word game sweeping the globe. Find what's hidden in plain sight.
TREPHINE
Definition of TREPHINE
noun
A surgical instrument with a cylindrical blade used to remove a circular section of tissue, such as bone or cornea; a trepan.
Wiktionary · CC BY-SA
Where it comes from
Borrowed from French tréphine, from Latin trepanum, from Ancient Greek τρύπανον (trúpanon, “auger, borer”). Doublet of trepan.
Etymology via Wiktionary (CC BY-SA).
Word DNA
Line of descent
- Ancient Greek
- Latin
- French
- English
3 recorded generations before English.
Deepest traced root
3rd
of 59 source languages in OUTLIER
12.2%
of traced words share this origin (9,501)
branch · 12.2% of traced words
How it is built
Same root, TREPHINE · 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.
TREPHINE in OUTLIER
Players have found it on 13 boards so far. 18 players have found it across Outlier's history.
It first turned up on Day 56, 15 July 2026. The most recent board was Day 154, 21 October 2026. Nobody has seen it on a board for 2 days.
First found by a player on Day 56, 15 July 2026.
Built from these letters
TREPHINE starts with T and ends with E. Sorted, its letters read EEHINPRT - the shape to hunt for when the grid is scrambled. E appears more than once.
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 TREPHI
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 56
Could you have found TREPHINE?
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 56 - and most players walked straight past it.
Play today's OUTLIER