The rare daily word game sweeping the globe. Find what's hidden in plain sight.
COMBUSTION
Definition of COMBUSTION
noun
(chemistry) The act or process of burning.
Wiktionary · CC BY-SA
Where it comes from
From Old French combustion, from Latin combustio, from comburere (“to burn”), itself from the intensifying prefix com- + the root burere (a faulty sep. of amburere "to burn around", itself from ambi- + urere "to burn, singe"); equivalent to combust + -ion.
Etymology via Wiktionary (CC BY-SA).
Word DNA
Line of descent
- Latin
- Old French
- English
2 recorded generations before English.
Deepest traced root
1st
of 59 source languages in OUTLIER
30.6%
of traced words share this origin (25,330)
branch · 30.6% 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.
COMBUSTION in OUTLIER
Players have found it on 37 boards so far. 113 players have found it across Outlier's history.
It first turned up on Day 8, 29 May 2026. The most recent board was Day 166, 2 November 2026. Nobody has seen it on a board for 1 day.
First found by a player on Day 8, 29 May 2026.
Built from these letters
COMBUSTION starts with C and ends with N. Sorted, its letters read BCIMNOOSTU - the shape to hunt for when the grid is scrambled. O appears more than once.
Words that start COMBUS
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 8
Could you have found COMBUSTION?
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 8 - and most players walked straight past it.
Play today's OUTLIER