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

CIRCADIAN

/səˈkeɪ.dɪ.ən/9 letters

Definition of CIRCADIAN

adjective

Of, relating to, or showing rhythmic behaviour with a period of approximately 24 hours; especially of a biological process.

Wiktionary · CC BY-SA

Where it comes from

From Latin circā (“around”) + diēs (“day”) + English -an. Compare circannual.

Etymology via Wiktionary (CC BY-SA).

Word DNA

Line of descent

  1. Latin
  2. English

One recorded step before English.

Latin

Deepest traced root

1st

of 59 source languages in OUTLIER

30.7%

of traced words share this origin (26,276)

Italic

branch · 30.7% of traced words

How it is built

adjective4 syllablescompound-an

Every Latin word → · 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.

CIRCADIAN in OUTLIER

Players have found it on 1 board so far. 35 players have found it across Outlier's history.

Day 1Day 174
Its one board, across 174 finished boards · taller bars are busier boards
1
Boards found on
139
First board
35
Days since seen

It first turned up on Day 139, 6 October 2026. Nobody has seen it on a board for 35 days.

First ever to find it

madazahatar

on Day 139, 6 October 2026 - before anyone else in Outlier's history. See the Pioneers

Built from these letters

CIRCADIAN
9
Letters
4
Vowels
5
Consonants
6
Different letters
2
Longest consonant run
2
Longest vowel run

CIRCADIAN starts with C and ends with N. Sorted, its letters read AACCDIINR - the shape to hunt for when the grid is scrambled. C, I and A appear more than once.

Could you have found CIRCADIAN?

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 139 - and most players walked straight past it.

Play today's OUTLIER