The rare daily word game sweeping the globe. Find what's hidden in plain sight.
CALEFACTION
Definition of CALEFACTION
noun
The act of warming or heating.
Wiktionary · CC BY-SA
Where it comes from
Borrowed from Latin calefactiō, calefactiōnem.
Etymology via Wiktionary (CC BY-SA).
Word DNA
Line of descent
- Latin
- English
One recorded step before English.
Deepest traced root
1st
of 58 source languages in OUTLIER
33%
of traced words share this origin (9,457)
branch · 33% 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.
CALEFACTION in OUTLIER
Players have found it on 1 board so far.
It first turned up on Day 139, 6 October 2026. Nobody has seen it on a board for 2 days.
First ever to find it
on Day 139, 6 October 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
CALEFACTION starts with C and ends with N. Sorted, its letters read AACCEFILNOT - the shape to hunt for when the grid is scrambled. C and A appear more than once.
Words that start CALEFAC
Its neighbours in the OUTLIER dictionary - shortest first.
Could you have found CALEFACTION?
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