The rare daily word game sweeping the globe. Find what's hidden in plain sight.
BIPLANAR
Definition of BIPLANAR
adjective
Between two tangent planes
Wiktionary · CC BY-SA
Where it comes from
From bi- + planar.
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.
BIPLANAR in OUTLIER
Players have found it on 2 boards so far.
It first turned up on Day 144, 11 October 2026. The most recent board was Day 151, 18 October 2026. Nobody has seen it on a board for 21 days.
First ever to find it
on Day 144, 11 October 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
BIPLANAR starts with B and ends with R. Sorted, its letters read AABILNPR - the shape to hunt for when the grid is scrambled. A appears more than once.
Could you have found BIPLANAR?
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 144 - and most players walked straight past it.
Play today's OUTLIER