The rare daily word game sweeping the globe. Find what's hidden in plain sight.
ACAPNIA
Definition of ACAPNIA
noun
The state in which the level of carbon dioxide in the blood and tissue is significantly lower than normal.
Wiktionary · CC BY-SA
Where it comes from
From New Latin acapnia, from Ancient Greek ἄκαπνος (ákapnos, “without smoke”), from ἀ- (a-, “not”) + καπνός (kapnós, “smoke”).
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.
ACAPNIA in OUTLIER
Players have found it on 1 board so far.
It first turned up on Day 127, 24 September 2026. It was on the latest finished board.
First ever to find it
on Day 127, 24 September 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
ACAPNIA starts with A and ends with A. Sorted, its letters read AAACINP - the shape to hunt for when the grid is scrambled. A appears more than once.
Could you have found ACAPNIA?
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 127 - and most players walked straight past it.
Play today's OUTLIER