The rare daily word game sweeping the globe. Find what's hidden in plain sight.
CORUNDUM
Definition of CORUNDUM
noun
An extremely hard mineral, a form of aluminum oxide with the chemical formula Al2O3, that occurs in the form of the gemstones sapphire and ruby; it is used as an abrasive.
Wiktionary · CC BY-SA
Where it comes from
From Tamil குருந்தம் (kuruntam, “ruby, sapphire”) First attested in the early 18th century.
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.
CORUNDUM in OUTLIER
Players have found it on 13 boards so far. 22 players have found it across Outlier's history.
It first turned up on Day 29, 18 June 2026. The most recent board was Day 108, 5 September 2026. Nobody has seen it on a board for 3 days.
First ever to find it
on Day 29, 18 June 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
CORUNDUM starts with C and ends with M. Sorted, its letters read CDMNORUU - the shape to hunt for when the grid is scrambled. U appears more than once.
Also seen on Day 29
Could you have found CORUNDUM?
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 29 - and most players walked straight past it.
Play today's OUTLIER