The rare daily word game sweeping the globe. Find what's hidden in plain sight.
ACID
Definition of ACID
adjective
Sour, sharp, or biting to the taste; tart; having the taste of vinegar.
Wiktionary · CC BY-SA
Where it comes from
From French acide, from Latin acidus (“sour, acid”), from aceō (“to be sour”). Doublet of agita.
Etymology via Wiktionary (CC BY-SA).
Word DNA
Line of descent
2 recorded generations 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
Same root, ACID · 19 relatives 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.
ACID in OUTLIER
It has fitted 1 board so far. 34 players have found it across Outlier's history.
It first turned up on Day 111, 8 September 2026. Nobody has seen it on a board for 57 days.
First found by a player on Day 20, 9 June 2026.
Built from these letters
ACID starts with A and ends with D. Sorted, its letters read ACDI - the shape to hunt for when the grid is scrambled. No letter is used twice, which makes it an isogram.
Same letters, different word
2 other words use exactly these letters. Worth knowing at the board: an anagram fits a grid the same way.
Words that start ACID
Its neighbours in the OUTLIER dictionary - shortest first.
Could you have found ACID?
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 111 - and most players walked straight past it.
Play today's OUTLIER