The rare daily word game sweeping the globe. Find what's hidden in plain sight.
COVARIANCE
Definition of COVARIANCE
noun
A statistical measure defined as Cov(X,Y)=E((X−μ)(Y−ν)) given two real-valued random variables X and Y, with expected values E(X)=μ and E(Y)=ν.
Wiktionary · CC BY-SA
Where it comes from
From co- + variance.
Etymology via Wiktionary (CC BY-SA).
Word DNA
How it is built
Same root, COVARIANCE · 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.
COVARIANCE in OUTLIER
Players have found it on 2 boards so far.
It first turned up on Day 137, 4 October 2026. The most recent board was Day 139, 6 October 2026. It was on the latest finished board.
First ever to find it
on Day 137, 4 October 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
COVARIANCE starts with C and ends with E. Sorted, its letters read AACCEINORV - the shape to hunt for when the grid is scrambled. C and A appear more than once.
Words that start COVARI
Its neighbours in the OUTLIER dictionary - shortest first.
Could you have found COVARIANCE?
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 137 - and most players walked straight past it.
Play today's OUTLIER