The rare daily word game sweeping the globe. Find what's hidden in plain sight.
ACULEIFORM
Definition of ACULEIFORM
adjective
Like a prickle or thorn
Wiktionary · CC BY-SA
Where it comes from
From Latin aculeus (“thorn”) + -iform.
Etymology via Wiktionary (CC BY-SA).
Word DNA
Line of descent
- Latin
- English
One recorded step before English.
Deepest traced root
1st
of 59 source languages in OUTLIER
30.6%
of traced words share this origin (25,378)
branch · 30.6% of traced words
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.
ACULEIFORM in OUTLIER
Players have found it on 2 boards so far.
It first turned up on Day 150, 17 October 2026. The most recent board was Day 166, 2 November 2026. Nobody has seen it on a board for 1 day.
First ever to find it
on Day 150, 17 October 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
ACULEIFORM starts with A and ends with M. Sorted, its letters read ACEFILMORU - the shape to hunt for when the grid is scrambled. No letter is used twice, which makes it an isogram.
Could you have found ACULEIFORM?
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 150 - and most players walked straight past it.
Play today's OUTLIER