The rare daily word game sweeping the globe. Find what's hidden in plain sight.
FLATLINE
Definition of FLATLINE
noun
An asystole; the absence of heart contractions or brain waves. The disappearance of the rhythmic peaks displayed on a heart monitor. The disappearance of brain waves on an electroencephalogram.
Wiktionary · CC BY-SA
Where it comes from
From flat + line. Refers to a continuous straight line (asystole) on an ECG (EKG) or EEG, indicating death.
Etymology via Wiktionary (CC BY-SA).
Word DNA
How it is built
OUTLIER scores every word on how unusual it is, and that number is not published. Working it out at the board is the game.
FLATLINE in OUTLIER
Players have found it on 2 boards so far.
It first turned up on Day 154, 21 October 2026. The most recent board was Day 166, 2 November 2026. Nobody has seen it on a board for 7 days.
First ever to find it
on Day 154, 21 October 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
FLATLINE starts with F and ends with E. Sorted, its letters read AEFILLNT - the shape to hunt for when the grid is scrambled. L appears more than once.
Words that start FLATLI
Its neighbours in the OUTLIER dictionary - shortest first.
Could you have found FLATLINE?
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 154 - and most players walked straight past it.
Play today's OUTLIER