The rare daily word game sweeping the globe. Find what's hidden in plain sight.
NITROX
Definition of NITROX
noun
An industrial process for case hardening (imparting greater surface hardness to) metal objects, involving nitrocarburizing (the diffusion of carbon and nitrogen into the metal) followed by oxidation.
Wiktionary · CC BY-SA
Where it comes from
Blend of nitro(gen) + ox(ygen). Analyzable as nitro- + ox
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.
NITROX in OUTLIER
Players have found it on 2 boards so far.
It first turned up on Day 87, 15 August 2026. The most recent board was Day 99, 27 August 2026. Nobody has seen it on a board for 3 days.
First ever to find it
on Day 87, 15 August 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
NITROX starts with N and ends with X. Sorted, its letters read INORTX - the shape to hunt for when the grid is scrambled. No letter is used twice, which makes it an isogram. It uses X - among the least common letters in written English.
Words that start NITROX
Its neighbours in the OUTLIER dictionary - shortest first.
Could you have found NITROX?
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 87 - and most players walked straight past it.
Play today's OUTLIER