The rare daily word game sweeping the globe. Find what's hidden in plain sight.
PLUTONIUM
Definition of PLUTONIUM
noun
The transuranic chemical element with atomic number 94 and symbol Pu: a silvery-gray fissile radioactive actinide metal that tarnishes when exposed to air. An atom of this element.
Wiktionary · CC BY-SA
Where it comes from
After Pluto (dwarf planet) + -n- + -ium. More in Wikipedia at plutonium § History.
Etymology via Wiktionary (CC BY-SA).
Word DNA
How it is built
Same root, PLUTONIUM · 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.
PLUTONIUM in OUTLIER
Players have found it on 44 boards so far. 134 players have found it across Outlier's history.
It first turned up on Day 15, 4 June 2026. The most recent board was Day 158, 25 October 2026. Nobody has seen it on a board for 4 days.
First ever to find it
on Day 15, 4 June 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
PLUTONIUM starts with P and ends with M. Sorted, its letters read ILMNOPTUU - the shape to hunt for when the grid is scrambled. U appears more than once.
Words that start PLUTON
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 15
Could you have found PLUTONIUM?
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 15 - and most players walked straight past it.
Play today's OUTLIER