The rare daily word game sweeping the globe. Find what's hidden in plain sight.
FLACK
Definition of FLACK
verb
To flutter; palpitate.
Wiktionary · CC BY-SA
Where it comes from
From Middle English flacken (“to palpitate, flutter”), from Old English *flaccian, from Proto-West Germanic *flakkōn, from Proto-Germanic *flakkōną (“to beat”), from Proto-Indo-European *pleḱ-, which could be related to Ancient Greek πλάζω (plázō, “to turn away from”). Akin to Middle Dutch vlacken (“to flicker, flash, sparkle”), Danish flakke (“to wander”), Swedish flacka (“to rove, rove about, ramble”), Icelandic flakka (“to move”). Compare also Icelandic flaka (“to flap, hang loose”), Swedish flaxa (“to flap, flutter”).
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.
FLACK in OUTLIER
Players have found it on 27 boards so far. 67 players have found it across Outlier's history.
It first turned up on Day 6, 27 May 2026. The most recent board was Day 108, 5 September 2026. Nobody has seen it on a board for 1 day.
First found by a player on Day 6, 27 May 2026.
Built from these letters
FLACK starts with F and ends with K. Sorted, its letters read ACFKL - the shape to hunt for when the grid is scrambled. No letter is used twice, which makes it an isogram.
Words that start FLACK
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 6
Could you have found FLACK?
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 6 - and most players walked straight past it.
Play today's OUTLIER