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

OXIDATION

/ɒksɪˈdeɪʃ(ə)n/9 letters

Definition of OXIDATION

noun

The combination of a substance with oxygen.

Wiktionary · CC BY-SA

Where it comes from

From French oxydation, equivalent to oxide + -ation. See oxidate.

Etymology via Wiktionary (CC BY-SA).

Word DNA

Line of descent

  1. French
  2. English

One recorded step before English.

French

Deepest traced root

5th

of 58 source languages in OUTLIER

7.2%

of traced words share this origin (2,062)

Romance

branch · 15.4% of traced words

How it is built

noun4 syllablescompound-ation

Same root, OXIDATION · 1 relative in the game

Every French 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.

OXIDATION in OUTLIER

Players have found it on 9 boards so far. 106 players have found it across Outlier's history.

Day 1Day 144
Its 9 boards, across 144 finished boards · taller bars are busier boards
9
Boards found on
65
First board
129
Latest board
15
Longest gap, days

It first turned up on Day 65, 24 July 2026. The most recent board was Day 129, 26 September 2026. Nobody has seen it on a board for 15 days.

First ever to find it

ogre

on Day 65, 24 July 2026 - before anyone else in Outlier's history. See the Pioneers

Also on

Built from these letters

OXIDATION
9
Letters
5
Vowels
4
Consonants
7
Different letters
1
Longest consonant run
2
Longest vowel run

OXIDATION starts with O and ends with N. Sorted, its letters read ADIINOOTX - the shape to hunt for when the grid is scrambled. O and I appear more than once. It uses X - among the least common letters in written English.

Words that start OXIDAT

Its neighbours in the OUTLIER dictionary - shortest first.

Could you have found OXIDATION?

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 65 - and most players walked straight past it.

Play today's OUTLIER