The rare daily word game sweeping the globe. Find what's hidden in plain sight.
SEROLOGY
Definition of SEROLOGY
noun
The science that studies the blood serum, and especially the reaction between antigens and antibodies in serum.
Wiktionary · CC BY-SA
Where it comes from
From sero- + -logy.
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.
SEROLOGY in OUTLIER
Players have found it on 12 boards so far. 22 players have found it across Outlier's history.
It first turned up on Day 33, 22 June 2026. The most recent board was Day 109, 6 September 2026. Nobody has seen it on a board for 2 days.
First ever to find it
on Day 33, 22 June 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
SEROLOGY starts with S and ends with Y. Sorted, its letters read EGLOORSY - the shape to hunt for when the grid is scrambled. O appears more than once.
Words that start SEROLO
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 33
Could you have found SEROLOGY?
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 33 - and most players walked straight past it.
Play today's OUTLIER