The rare daily word game sweeping the globe. Find what's hidden in plain sight.
BIOAERATION
Definition of BIOAERATION
noun
A form of the activated sludge process in which air is blown through the raw sewage.
Wiktionary · CC BY-SA
Where it comes from
From bio- + aeration.
Etymology via Wiktionary (CC BY-SA).
Word DNA
How it is built
OUTLIER scores every word on how unusual it is, and that number is not published. Working it out at the board is the game.
BIOAERATION in OUTLIER
It has fitted 1 board so far.
It first turned up on Day 3, 24 May 2026. Nobody has seen it on a board for 137 days.
First ever to find it
on Day 37, 26 June 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
BIOAERATION starts with B and ends with N. Sorted, its letters read AABEIINOORT - the shape to hunt for when the grid is scrambled. I, O and A appear more than once.
Also seen on Day 3
Could you have found BIOAERATION?
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 3 - and most players walked straight past it.
Play today's OUTLIER