The rare daily word game sweeping the globe. Find what's hidden in plain sight.
OOLITH
Definition of OOLITH
noun
A spherical granule of which oolite is composed, formed by concentric accretion of thin layers of a mineral (usually calcium carbonate (limestone) but also others such as dolomite and silica) around a core; an ooid.
Wiktionary · CC BY-SA
Where it comes from
Borrowed from Late Latin oolithus; the Latin word was coined by the German doctor and mineralogist Franz Ernst Brückmann (1697–1753) as a translation of German Rogenstein (“oolite”) (Rogen (“fish roe”) + Stein (“stone”)). Oolithus is derived from Ancient Greek ᾠόν (ōión, “egg; seed”) (possibly ultimately from Proto-Indo-European *h₂ew- (“to clothe oneself, dress; to be dressed”), in the sense of a bird being clothed in feathers) + λῐ́θος (lĭ́thos, “a stone; stone as a substance”) (see further at that entry), analysable as oo- + -lith.
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.
OOLITH in OUTLIER
Players have found it on 8 boards so far. 10 players have found it across Outlier's history.
It first turned up on Day 48, 7 July 2026. The most recent board was Day 118, 15 September 2026. Nobody has seen it on a board for 1 day.
First ever to find it
on Day 48, 7 July 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
OOLITH starts with O and ends with H. Sorted, its letters read HILOOT - the shape to hunt for when the grid is scrambled. O appears more than once, including a double letter.
Same letters, different word
One other word uses exactly these letters. Worth knowing at the board: an anagram fits a grid the same way.
Could you have found OOLITH?
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 48 - and most players walked straight past it.
Play today's OUTLIER