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

BISULFITE

9 letters

Definition of BISULFITE

noun

The univalent group -HSO3, or any salt containing it.

Wiktionary · CC BY-SA

Where it comes from

From bi- + sulfite.

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.

BISULFITE in OUTLIER

Players have found it on 1 board so far.

Day 1Day 102
Its one board, across 102 finished boards · taller bars are busier boards
1
Boards found on
83
First board
19
Days since seen

It first turned up on Day 83, 11 August 2026. Nobody has seen it on a board for 19 days.

First ever to find it

bfreeemb

on Day 83, 11 August 2026 - before anyone else in Outlier's history. See the Pioneers

Built from these letters

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

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

Words that start BISULF

Its neighbours in the OUTLIER dictionary - shortest first.

BISULFATEBISULFIDEBISULFATESBISULFIDESBISULFITES

Could you have found BISULFITE?

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 83 - and most players walked straight past it.

Play today's OUTLIER

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The OUTLIER card for BISULFITEDownload image