The rare daily word game sweeping the globe. Find what's hidden in plain sight.
BOOK
Definition of BOOK
noun
A collection of sheets of paper bound together to hinge at one edge, containing printed or written material, pictures, etc.
Wiktionary · CC BY-SA
Where it comes from
From Middle English bok, book, from Old English bōc, from Proto-West Germanic *bōk, from Proto-Germanic *bōks. Bookmaker sense by clipping. Cognate with Scots beuk, buik, buke (“book”), Yola buke (“book”), North Frisian Bok, buk, bök (“book”), Saterland Frisian Bouk (“book”), West Frisian, Dutch boek (“book”), Alemannic German Buech (“book”), Bavarian Buach (“book”), Central Franconian Booch, Buch (“book”), German, Luxembourgish Buch (“book”), German Low German Book (“book”), Limburgish book, Bouk (“book”), Vilamovian büch (“book”), Yiddish בוך (bukh, “book”), Danish bog (“book”), Elfdalian buok (“book”), Faroese, Icelandic bók (“book”), Norwegian Bokmål, Norwegian Nynorsk and Swedish bok (“book”).
Etymology via Wiktionary (CC BY-SA).
OUTLIER scores every word on how unusual it is, and that number is not published. Working it out at the board is the game.
BOOK in OUTLIER
Players have found it on 17 boards so far. 20 players have found it across Outlier's history.
It first turned up on Day 9, 29 May 2026. The most recent board was Day 110, 7 September 2026. Nobody has seen it on a board for 2 days.
First found by a player on Day 9, 29 May 2026.
Built from these letters
BOOK starts with B and ends with K. Sorted, its letters read BKOO - the shape to hunt for when the grid is scrambled. O appears more than once, including a double letter.
Same letters, different word
2 other words use exactly these letters. Worth knowing at the board: an anagram fits a grid the same way.
Words that start BOOK
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 9
Could you have found BOOK?
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 9 - and most players walked straight past it.
Play today's OUTLIER