The rare daily word game sweeping the globe. Find what's hidden in plain sight.
ACTINIDE
Definition of ACTINIDE
noun
Any of the 15 radioactive elements of the periodic table from actinium to lawrencium that are positioned under the lanthanides, to which they have similar chemistry.
Wiktionary · CC BY-SA
Where it comes from
From actin- + -ide.
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.
ACTINIDE in OUTLIER
Players have found it on 9 boards so far. 17 players have found it across Outlier's history.
It first turned up on Day 14, 3 June 2026. The most recent board was Day 101, 29 August 2026. Nobody has seen it on a board for 1 day.
First found by a player on Day 14, 3 June 2026.
Built from these letters
ACTINIDE starts with A and ends with E. Sorted, its letters read ACDEIINT - the shape to hunt for when the grid is scrambled. I appears more than once.
Same letters, different word
3 other words use exactly these letters. Worth knowing at the board: an anagram fits a grid the same way.
Words that start ACTINI
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 14
Could you have found ACTINIDE?
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 14 - and most players walked straight past it.
Play today's OUTLIER