The rare daily word game sweeping the globe. Find what's hidden in plain sight.
ACERB
Definition of ACERB
adjective
Sour, bitter, and harsh to the taste, such as unripe fruit.
Wiktionary · CC BY-SA
Where it comes from
From Latin acerbus, from Latin ācer (“sharp”): compare French acerbe. See acrid.
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.
ACERB in OUTLIER
Players have found it on 12 boards so far. 11 players have found it across Outlier's history.
It first turned up on Day 36, 25 June 2026. The most recent board was Day 105, 2 September 2026. Nobody has seen it on a board for 1 day.
First ever to find it
on Day 36, 25 June 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
ACERB starts with A and ends with B. Sorted, its letters read ABCER - the shape to hunt for when the grid is scrambled. No letter is used twice, which makes it an isogram.
Same letters, different word
3 other words use exactly these letters. Worth knowing at the board: an anagram fits a grid the same way.
Words that start ACERB
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 36
Could you have found ACERB?
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 36 - and most players walked straight past it.
Play today's OUTLIER