The rare daily word game sweeping the globe. Find what's hidden in plain sight.
MASTOIDAL
Definition of MASTOIDAL
adjective
mastoid
Wiktionary · CC BY-SA
Where it comes from
From mastoid + -al.
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.
MASTOIDAL in OUTLIER
Players have found it on 6 boards so far.
It first turned up on Day 43, 2 July 2026. The most recent board was Day 98, 26 August 2026. It was on the latest finished board.
First ever to find it
on Day 43, 2 July 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
MASTOIDAL starts with M and ends with L. Sorted, its letters read AADILMOST - the shape to hunt for when the grid is scrambled. A appears more than once.
Words that start MASTOI
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 43
Could you have found MASTOIDAL?
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 43 - and most players walked straight past it.
Play today's OUTLIER