The rare daily word game sweeping the globe. Find what's hidden in plain sight.
MUTUALISM
Definition of MUTUALISM
noun
Any interaction between two species that benefits both; typically involves the exchange of substances or services.
Wiktionary · CC BY-SA
Where it comes from
From mutual + -ism. Compare French mutualisme and Italian, Portuguese, and Spanish mutualismo.
Etymology via Wiktionary (CC BY-SA).
Word DNA
How it is built
Same root, MUTUAL · 8 relatives in the game
Its etymology also names French, Italian, Portuguese, Spanish.
OUTLIER scores every word on how unusual it is, and that number is not published. Working it out at the board is the game.
MUTUALISM in OUTLIER
Players have found it on 2 boards so far.
It first turned up on Day 166, 2 November 2026. The most recent board was Day 167, 3 November 2026. Nobody has seen it on a board for 6 days.
First ever to find it
on Day 166, 2 November 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
MUTUALISM starts with M and ends with M. Sorted, its letters read AILMMSTUU - the shape to hunt for when the grid is scrambled. M and U appear more than once.
Words that start MUTUAL
Its neighbours in the OUTLIER dictionary - shortest first.
Could you have found MUTUALISM?
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 166 - and most players walked straight past it.
Play today's OUTLIER