The rare daily word game sweeping the globe. Find what's hidden in plain sight.
SUBTERRAIN
Definition of SUBTERRAIN
noun
The bedrock or rock layer that lies beneath the soil and superficial features of an area.
Wiktionary · CC BY-SA
Where it comes from
(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)
Etymology via Wiktionary (CC BY-SA).
Word DNA
How it is built
OUTLIER scores every word on how unusual it is, and that number is not published. Working it out at the board is the game.
SUBTERRAIN in OUTLIER
Players have found it on 2 boards so far.
It first turned up on Day 138, 5 October 2026. The most recent board was Day 140, 7 October 2026. Nobody has seen it on a board for 2 days.
First ever to find it
on Day 138, 5 October 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
SUBTERRAIN starts with S and ends with N. Sorted, its letters read ABEINRRSTU - the shape to hunt for when the grid is scrambled. R appears more than once, including a double letter.
Words that start SUBTER
Its neighbours in the OUTLIER dictionary - shortest first.
Could you have found SUBTERRAIN?
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 138 - and most players walked straight past it.
Play today's OUTLIER