The rare daily word game sweeping the globe. Find what's hidden in plain sight.
BIOGAS
Definition of BIOGAS
noun
A mixture of methane and carbon dioxide, produced by anaerobic digestion of organic waste matter, used as a fuel.
Wiktionary · CC BY-SA
Where it comes from
From bio- + gas.
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.
BIOGAS in OUTLIER
Players have found it on 4 boards so far.
It first turned up on Day 8, 29 May 2026. The most recent board was Day 109, 6 September 2026. Nobody has seen it on a board for 11 days.
First found by a player on Day 8, 29 May 2026.
Built from these letters
BIOGAS starts with B and ends with S. Sorted, its letters read ABGIOS - the shape to hunt for when the grid is scrambled. No letter is used twice, which makes it an isogram.
Words that start BIOGAS
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 8
Could you have found BIOGAS?
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 8 - and most players walked straight past it.
Play today's OUTLIER