The rare daily word game sweeping the globe. Find what's hidden in plain sight.
BACKFILE
Definition of BACKFILE
noun
A file of documents in paper or fiche format that have no digital equivalent.
Wiktionary · CC BY-SA
Where it comes from
From back + file.
Etymology via Wiktionary (CC BY-SA).
Word DNA
How it is built
Same root, BACKFILE · 1 relative in the game
OUTLIER scores every word on how unusual it is, and that number is not published. Working it out at the board is the game.
BACKFILE in OUTLIER
Players have found it on 1 board so far.
It first turned up on Day 144, 11 October 2026. Nobody has seen it on a board for 5 days.
First ever to find it
on Day 144, 11 October 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
BACKFILE starts with B and ends with E. Sorted, its letters read ABCEFIKL - the shape to hunt for when the grid is scrambled. No letter is used twice, which makes it an isogram.
Words that start BACKFI
Its neighbours in the OUTLIER dictionary - shortest first.
Could you have found BACKFILE?
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 144 - and most players walked straight past it.
Play today's OUTLIER