The rare daily word game sweeping the globe. Find what's hidden in plain sight.
SIDERAL
Definition of SIDERAL
adjective
Dated form of sidereal.
Wiktionary · CC BY-SA
Where it comes from
Borrowed from Latin sīderālis.
Etymology via Wiktionary (CC BY-SA).
Word DNA
Line of descent
- Latin
- English
One recorded step before English.
Deepest traced root
1st
of 59 source languages in OUTLIER
30.7%
of traced words share this origin (23,951)
branch · 30.7% of traced words
How it is built
OUTLIER scores every word on how unusual it is, and that number is not published. Working it out at the board is the game.
SIDERAL in OUTLIER
Players have found it on 33 boards so far. 52 players have found it across Outlier's history.
It first turned up on Day 45, 4 July 2026. The most recent board was Day 157, 24 October 2026. It was on the latest finished board.
First ever to find it
on Day 45, 4 July 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
SIDERAL starts with S and ends with L. Sorted, its letters read ADEILRS - 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 SIDERA
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 45
Could you have found SIDERAL?
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 45 - and most players walked straight past it.
Play today's OUTLIER