The rare daily word game sweeping the globe. Find what's hidden in plain sight.
ACTINOLOGY
Definition of ACTINOLOGY
noun
The study of the effect of light on chemicals.
Wiktionary · CC BY-SA
Where it comes from
From actino- + -logy.
Etymology via Wiktionary (CC BY-SA).
Word DNA
How it is built
OUTLIER scores every word on how unusual it is, and that number is not published. Working it out at the board is the game.
ACTINOLOGY in OUTLIER
Players have found it on 2 boards so far.
It first turned up on Day 149, 16 October 2026. The most recent board was Day 156, 23 October 2026. Nobody has seen it on a board for 4 days.
First ever to find it
on Day 149, 16 October 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
ACTINOLOGY starts with A and ends with Y. Sorted, its letters read ACGILNOOTY - the shape to hunt for when the grid is scrambled. O appears more than once.
Words that start ACTINO
Its neighbours in the OUTLIER dictionary - shortest first.
Could you have found ACTINOLOGY?
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 149 - and most players walked straight past it.
Play today's OUTLIER