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

FOIL

/fɔɪl/4 letters

Definition of FOIL

noun

A very thin sheet of metal.

Wiktionary · CC BY-SA

Where it comes from

From Middle English foyle, from Middle French fueille, from Old French fueille (“plant leaf”), from Late Latin folia, the plural of folium, mistaken as a singular feminine. The literary sense is from the practice of backing a gem with metal foil to make it shine more brilliantly. Doublet of folio and folium, distantly also with phyllo and phyllon.

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.

FOIL in OUTLIER

Players have found it on 18 boards so far. 31 players have found it across Outlier's history.

Day 1Day 102
Its 18 boards, across 102 finished boards · taller bars are busier boards
18
Boards found on
27
First board
99
Latest board
18
Longest gap, days

It first turned up on Day 27, 16 June 2026. The most recent board was Day 99, 27 August 2026. Nobody has seen it on a board for 3 days.

First found by a player on Day 27, 16 June 2026.

Built from these letters

FOIL
4
Letters
2
Vowels
2
Consonants
4
Different letters
1
Longest consonant run
2
Longest vowel run

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

Same letters, different word

One other word uses exactly these letters. Worth knowing at the board: an anagram fits a grid the same way.

Words that start FOIL

Its neighbours in the OUTLIER dictionary - shortest first.

Could you have found FOIL?

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 27 - and most players walked straight past it.

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The OUTLIER card for FOILDownload image