The rare daily word game sweeping the globe. Find what's hidden in plain sight.
FEMTOSECOND
Definition of FEMTOSECOND
noun
An SI unit of time equal to 10 seconds. Symbol: fs
Wiktionary · CC BY-SA
Where it comes from
From femto- + second.
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.
FEMTOSECOND in OUTLIER
Players have found it on 13 boards so far. 27 players have found it across Outlier's history.
It first turned up on Day 27, 16 June 2026. The most recent board was Day 96, 24 August 2026. Nobody has seen it on a board for 6 days.
First ever to find it
on Day 27, 16 June 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
FEMTOSECOND starts with F and ends with D. Sorted, its letters read CDEEFMNOOST - the shape to hunt for when the grid is scrambled. E and O appear more than once.
Words that start FEMTOSE
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 27
Could you have found FEMTOSECOND?
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.
Play today's OUTLIER