The rare daily word game sweeping the globe. Find what's hidden in plain sight.
AECIDIUM
Definition of AECIDIUM
noun
The cupulate fruiting body borne upon the mycelium of certain fungi commonly parasitic upon specimens of the Compositae, Lamiaceae, Leguminosae, and Ranunculaceae families
Wiktionary · CC BY-SA
Where it comes from
From New Latin aecidium, the diminutive form of Ancient Greek αἰκίᾱ (aikíā, “injury”). However Merriam-Webster takes the origin from Ancient Greek οἰκίδιον (oikídion) and refers to the botanist John Hill, in his A General Natural History, or New and Accurate Descriptions of the Animals, Vegetables, and Minerals, of the Different Parts of the World, vol. II, A History of Plants (London: Printed for Thomas Osborne, 1751), p. 64: "We have called this genus, distinguished by its peculiar cells, Æcidium, from the Greek οικιδιον, cellula." Compare also many other fungal spore-related terms in -idium, most coined after this one.
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.
AECIDIUM in OUTLIER
Players have found it on 3 boards so far.
It first turned up on Day 42, 1 July 2026. The most recent board was Day 72, 31 July 2026. Nobody has seen it on a board for 30 days.
First ever to find it
on Day 47, 6 July 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
AECIDIUM starts with A and ends with M. Sorted, its letters read ACDEIIMU - the shape to hunt for when the grid is scrambled. I appears more than once.
Also seen on Day 42
Could you have found AECIDIUM?
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 42 - and most players walked straight past it.
Play today's OUTLIER