The rare daily word game sweeping the globe. Find what's hidden in plain sight.
RHEOLOGY
Definition of RHEOLOGY
noun
The branch of physics that studies the deformation and flow of matter.
Wiktionary · CC BY-SA
Where it comes from
Coined by American scientist Eugene C. Bingham in 1920, following a suggestion by a colleague, Markus Reiner; inspired by aphorism πάντα ῥεῖ (pánta rheî, “everything flows”) by Simplicius of Cilicia. Formed from Ancient Greek ῥέω (rhéō, “flow”) + -logy (“study of”, suffix ultimately from Ancient Greek). See also rheo-.
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.
RHEOLOGY in OUTLIER
Players have found it on 9 boards so far. 21 players have found it across Outlier's history.
It first turned up on Day 25, 14 June 2026. The most recent board was Day 100, 28 August 2026. Nobody has seen it on a board for 2 days.
First found by a player on Day 25, 14 June 2026.
Built from these letters
RHEOLOGY starts with R and ends with Y. Sorted, its letters read EGHLOORY - the shape to hunt for when the grid is scrambled. O appears more than once.
Words that start RHEOLO
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 25
Could you have found RHEOLOGY?
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 25 - and most players walked straight past it.
Play today's OUTLIER