The rare daily word game sweeping the globe. Find what's hidden in plain sight.
ACTINIUM
Definition of ACTINIUM
noun
A radioactive, metallic chemical element (symbol: Ac) with an atomic number of 89; found in uranium ores. An atom of this element.
Wiktionary · CC BY-SA
Where it comes from
Borrowed from French actinium. actin- + -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.
ACTINIUM in OUTLIER
Players have found it on 18 boards so far. 29 players have found it across Outlier's history.
It first turned up on Day 8, 29 May 2026. The most recent board was Day 102, 30 August 2026. It was on the latest finished board.
First found by a player on Day 8, 29 May 2026.
Built from these letters
ACTINIUM starts with A and ends with M. Sorted, its letters read ACIIMNTU - the shape to hunt for when the grid is scrambled. I appears more than once.
Words that start ACTINI
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 8
Could you have found ACTINIUM?
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 8 - and most players walked straight past it.
Play today's OUTLIER