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

ACETYL

/əˈsiːtaɪl/6 letters

Definition of ACETYL

noun

The univalent radical CH3CO- derived from acetic acid.

Wiktionary · CC BY-SA

Where it comes from

aceto- + -yl. From Latin acētum (“vinegar”) + Ancient Greek ὕλη (húlē, “substance”).

Etymology via Wiktionary (CC BY-SA).

Word DNA

Line of descent

  1. Ancient Greek
  2. Latin
  3. English

2 recorded generations before English.

Ancient Greek

Deepest traced root

3rd

of 59 source languages in OUTLIER

12.2%

of traced words share this origin (9,501)

Hellenic

branch · 12.2% of traced words

How it is built

noun3 syllablescompound-ylaceto-

Same root, ACETYL · 6 relatives in the game

Every Ancient Greek 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.

ACETYL in OUTLIER

Players have found it on 37 boards so far. 67 players have found it across Outlier's history.

Day 1Day 157
Its 37 boards, across 157 finished boards · taller bars are busier boards
37
Boards found on
10
First board
157
Latest board
17
Longest gap, days

It first turned up on Day 10, 30 May 2026. The most recent board was Day 157, 24 October 2026. It was on the latest finished board.

First found by a player on Day 10, 30 May 2026.

Built from these letters

ACETYL
6
Letters
2
Vowels
4
Consonants
6
Different letters
3
Longest consonant run
1
Longest vowel run

ACETYL starts with A and ends with L. Sorted, its letters read ACELTY - the shape to hunt for when the grid is scrambled. No letter is used twice, which makes it an isogram.

Words that start ACETYL

Its neighbours in the OUTLIER dictionary - shortest first.

ACETYLSACETYLICACETYLASEACETYLATEACETYLENEACETYLIDEACETYLATEDACETYLATESACETYLENESACETYLENICACETYLIDESACETYLATING

Could you have found ACETYL?

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 10 - and most players walked straight past it.

Play today's OUTLIER