The rare daily word game sweeping the globe. Find what's hidden in plain sight.
CASTLING
Definition of CASTLING
noun
An abortion, or a premature birth.
Wiktionary · CC BY-SA
Other senses
CASTLING carries 4 further meanings.
noun
An abortion.
Abortive.
noun
That which is cast or brought forth prematurely; an abortion.
noun
A compound move of the king and castle. See castle, v. i.
Where it comes from
From cast + -ling.
Etymology via Wiktionary (CC BY-SA).
Word DNA
How it is built
Same root, CAST · 9 relatives in the game
CASTLING in a sentence
“Another high-level member of Mr. Putin's circle, Finance Minister Alexei Kudrin, resigned from the government in September after the so-called castling of leaders was announced.”
OUTLIER scores every word on how unusual it is, and that number is not published. Working it out at the board is the game.
CASTLING in OUTLIER
Players have found it on 28 boards so far. 117 players have found it across Outlier's history.
It first turned up on Day 40, 29 June 2026. The most recent board was Day 163, 30 October 2026. Nobody has seen it on a board for 1 day.
First ever to find it
on Day 40, 29 June 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
CASTLING starts with C and ends with G. Sorted, its letters read ACGILNST - the shape to hunt for when the grid is scrambled. No letter is used twice, which makes it an isogram.
Words that mean much the same
Near-synonyms of CASTLING. Not interchangeable at the board - the grid decides that - but close in meaning.
Same letters, different word
One other word uses exactly these letters. Worth knowing at the board: an anagram fits a grid the same way.
Also seen on Day 40
Could you have found CASTLING?
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 40 - and most players walked straight past it.
Play today's OUTLIER