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

BERKELIUM

/bɜːɹˈkiːliəm/9 letters

Definition of BERKELIUM

noun

A transuranic chemical element (symbol Bk) with an atomic number of 97. An atom of this element.

Wiktionary · CC BY-SA

Where it comes from

After Berkeley, California, because of discovery at UC Berkeley, + -ium.

Etymology via Wiktionary (CC BY-SA).

Word DNA

How it is built

noun3 syllablescompound-ium

Same root, BERKELIUM · 1 relative in the game

The Word DNA of OUTLIER →

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.

BERKELIUM in OUTLIER

Players have found it on 21 boards so far. 42 players have found it across Outlier's history.

Day 1Day 147
Its 21 boards, across 147 finished boards · taller bars are busier boards
21
Boards found on
37
First board
144
Latest board
17
Longest gap, days

It first turned up on Day 37, 26 June 2026. The most recent board was Day 144, 11 October 2026. Nobody has seen it on a board for 3 days.

First found by a player on Day 37, 26 June 2026.

Built from these letters

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

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

Words that start BERKEL

Its neighbours in the OUTLIER dictionary - shortest first.

Could you have found BERKELIUM?

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 37 - and most players walked straight past it.

Play today's OUTLIER