The rare daily word game sweeping the globe. Find what's hidden in plain sight.
TRIOXIDE
Definition of TRIOXIDE
noun
Any oxide containing three oxygen atoms in each molecule.
Wiktionary · CC BY-SA
Where it comes from
From tri- + oxide.
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.
TRIOXIDE in OUTLIER
Players have found it on 6 boards so far. 14 players have found it across Outlier's history.
It first turned up on Day 65, 24 July 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 65, 24 July 2026.
Built from these letters
TRIOXIDE starts with T and ends with E. Sorted, its letters read DEIIORTX - the shape to hunt for when the grid is scrambled. I appears more than once. It uses X - among the least common letters in written English.
Words that start TRIOXI
Its neighbours in the OUTLIER dictionary - shortest first.
Could you have found TRIOXIDE?
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 65 - and most players walked straight past it.
Play today's OUTLIER