The rare daily word game sweeping the globe. Find what's hidden in plain sight.
ZEPTOSECOND
Definition of ZEPTOSECOND
noun
An SI unit of time equal to 10 seconds. Symbol: zs
Wiktionary · CC BY-SA
Where it comes from
From zepto- + 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.
ZEPTOSECOND in OUTLIER
Players have found it on 2 boards so far.
It first turned up on Day 55, 14 July 2026. The most recent board was Day 69, 28 July 2026. Nobody has seen it on a board for 53 days.
First ever to find it
on Day 55, 14 July 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
ZEPTOSECOND starts with Z and ends with D. Sorted, its letters read CDEENOOPSTZ - the shape to hunt for when the grid is scrambled. E and O appear more than once. It uses Z - among the least common letters in written English.
Also seen on Day 55
Could you have found ZEPTOSECOND?
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 55 - and most players walked straight past it.
Play today's OUTLIER