The rare daily word game sweeping the globe. Find what's hidden in plain sight.

HISTAMINE

/ˈhɪstəmiːn/9 letters

Definition of HISTAMINE

noun

An amine, C5H9N3, formed by decarboxylation of histidine, that causes dilatation of capillaries, contraction of smooth muscle, and stimulation of gastric acid secretion; it is released during allergic reactions.

Wiktionary · CC BY-SA

Where it comes from

From hist(idine) + -amine.

Etymology via Wiktionary (CC BY-SA).

Rarity score
Withheld
Revealed only in play
Tier
Withheld
Find it yourself

OUTLIER scores every word on how unusual it is, and that number is not published. Working it out at the board is the game.

HISTAMINE in OUTLIER

Players have found it on 30 boards so far. 54 players have found it across Outlier's history.

Day 1Day 102
Its 30 boards, across 102 finished boards · taller bars are busier boards
30
Boards found on
20
First board
102
Latest board
7
Longest gap, days

It first turned up on Day 20, 9 June 2026. The most recent board was Day 102, 30 August 2026. It was on the latest finished board.

First ever to find it

hoshichiri

on Day 20, 9 June 2026 - before anyone else in Outlier's history. See the Pioneers

Built from these letters

HISTAMINE
9
Letters
4
Vowels
5
Consonants
8
Different letters
2
Longest consonant run
1
Longest vowel run

HISTAMINE starts with H and ends with E. Sorted, its letters read AEHIIMNST - the shape to hunt for when the grid is scrambled. I appears more than once.

Same letters, different word

One other word uses exactly these letters. Worth knowing at the board: an anagram fits a grid the same way.

Words that start HISTAM

Its neighbours in the OUTLIER dictionary - shortest first.

HISTAMINHISTAMINSHISTAMINESHISTAMINICHISTAMINASEHISTAMINASESHISTAMINERGIC

Could you have found HISTAMINE?

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 20 - and most players walked straight past it.

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