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

PHOSGENE

/ˈfɒsd͡ʒɪn/8 letters

Definition of PHOSGENE

noun

carbonyl chloride

Wiktionary · CC BY-SA

Where it comes from

From Ancient Greek φῶς (phôs, “light”) + -gene, due to its first synthesis involving sunlight.

Etymology via Wiktionary (CC BY-SA).

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.

PHOSGENE in OUTLIER

Players have found it on 21 boards so far. 45 players have found it across Outlier's history.

Day 1Day 97
Its 21 boards, across 97 finished boards · taller bars are busier boards
21
Boards found on
16
First board
97
Latest board
16
Longest gap, days

It first turned up on Day 16, 5 June 2026. The most recent board was Day 97, 25 August 2026. It was on the latest finished board.

First found by a player on Day 16, 5 June 2026.

Built from these letters

PHOSGENE
8
Letters
3
Vowels
5
Consonants
7
Different letters
2
Longest consonant run
1
Longest vowel run

PHOSGENE starts with P and ends with E. Sorted, its letters read EEGHNOPS - the shape to hunt for when the grid is scrambled. E appears more than once.

Words that start PHOSGE

Its neighbours in the OUTLIER dictionary - shortest first.

PHOSGENESPHOSGENITEPHOSGENITES

Could you have found PHOSGENE?

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 16 - and most players walked straight past it.

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