The rare daily word game sweeping the globe. Find what's hidden in plain sight.
CAUSTICITY
Definition of CAUSTICITY
noun
The quality of being physically caustic; burning, corrosive.
Wiktionary · CC BY-SA
Where it comes from
From caustic + -ity.
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.
CAUSTICITY in OUTLIER
Players have found it on 1 board so far. 21 players have found it across Outlier's history.
It first turned up on Day 90, 18 August 2026. Nobody has seen it on a board for 19 days.
First ever to find it
on Day 90, 18 August 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
CAUSTICITY starts with C and ends with Y. Sorted, its letters read ACCIISTTUY - the shape to hunt for when the grid is scrambled. C, T and I appear more than once.
Words that start CAUSTI
Its neighbours in the OUTLIER dictionary - shortest first.
Could you have found CAUSTICITY?
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 90 - and most players walked straight past it.
Play today's OUTLIER