The rare daily word game sweeping the globe. Find what's hidden in plain sight.
RADIUM
Definition of RADIUM
noun
The chemical element (symbol Ra) with an atomic number of 88. It is a soft, shiny and silvery radioactive alkaline earth metal. An atom of this element.
Wiktionary · CC BY-SA
Where it comes from
Borrowed from French radium, from rad(ioactif) (“radioactive”) + -ium (suffix used to form the names of metallic elements).
Etymology via Wiktionary (CC BY-SA).
Word DNA
Line of descent
- French
- English
One recorded step before English.
Deepest traced root
5th
of 59 source languages in OUTLIER
5.3%
of traced words share this origin (4,144)
branch · 12.9% of traced words
How it is built
Same root, RADIUM · 1 relative 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.
RADIUM in OUTLIER
Players have found it on 69 boards so far. 167 players have found it across Outlier's history.
It first turned up on Day 23, 12 June 2026. The most recent board was Day 158, 25 October 2026. It was on the latest finished board.
First ever to find it
on Day 23, 12 June 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
RADIUM starts with R and ends with M. Sorted, its letters read ADIMRU - the shape to hunt for when the grid is scrambled. No letter is used twice, which makes it an isogram.
Also seen on Day 23
Could you have found RADIUM?
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 23 - and most players walked straight past it.
Play today's OUTLIER