The rare daily word game sweeping the globe. Find what's hidden in plain sight.
RHEOTAXIS
Definition of RHEOTAXIS
noun
movement in response to a current (of water or air)
Wiktionary · CC BY-SA
Where it comes from
From rheo- + taxis.
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.
RHEOTAXIS in OUTLIER
Players have found it on 4 boards so far.
It first turned up on Day 85, 13 August 2026. The most recent board was Day 99, 27 August 2026. It was on the latest finished board.
First ever to find it
on Day 85, 13 August 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
RHEOTAXIS starts with R and ends with S. Sorted, its letters read AEHIORSTX - the shape to hunt for when the grid is scrambled. No letter is used twice, which makes it an isogram. It uses X - among the least common letters in written English.
Words that start RHEOTA
Its neighbours in the OUTLIER dictionary - shortest first.
Could you have found RHEOTAXIS?
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 85 - and most players walked straight past it.
Play today's OUTLIER