The rare daily word game sweeping the globe. Find what's hidden in plain sight.
THALLIUM
Definition of THALLIUM
noun
A metallic chemical element (symbol Tl) with atomic number 81: a gray post-transition metal that discolors when exposed to air. An atom of this element.
Wiktionary · CC BY-SA
Where it comes from
Coined based on Ancient Greek θαλλός (thallós, “green branch”) (after the color of the radiation spectra), + -ium.
Etymology via Wiktionary (CC BY-SA).
OUTLIER scores every word on how unusual it is, and that number is not published. Working it out at the board is the game.
THALLIUM in OUTLIER
Players have found it on 2 boards so far. 12 players have found it across Outlier's history.
It first turned up on Day 110, 7 September 2026. The most recent board was Day 117, 14 September 2026. Nobody has seen it on a board for 2 days.
First found by a player on Day 110, 7 September 2026.
Built from these letters
THALLIUM starts with T and ends with M. Sorted, its letters read AHILLMTU - the shape to hunt for when the grid is scrambled. L appears more than once, including a double letter.
Words that start THALLI
Its neighbours in the OUTLIER dictionary - shortest first.
Could you have found THALLIUM?
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 110 - and most players walked straight past it.
Play today's OUTLIER