The rare daily word game sweeping the globe. Find what's hidden in plain sight.
MONOXIDE
Definition of MONOXIDE
noun
Any oxide containing a single oxygen atom in each molecule or formula unit.
Wiktionary · CC BY-SA
Where it comes from
Formed as mon- + oxide; compare the earlier dioxide, pentoxide, and tetroxide.
Etymology via Wiktionary (CC BY-SA).
Word DNA
How it is built
Same root, MONOXIDE · 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.
MONOXIDE in OUTLIER
Players have found it on 14 boards so far. 34 players have found it across Outlier's history.
It first turned up on Day 65, 24 July 2026. The most recent board was Day 164, 31 October 2026. Nobody has seen it on a board for 2 days.
First found by a player on Day 65, 24 July 2026.
Built from these letters
MONOXIDE starts with M and ends with E. Sorted, its letters read DEIMNOOX - the shape to hunt for when the grid is scrambled. O appears more than once. It uses X - among the least common letters in written English.
Could you have found MONOXIDE?
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