The rare daily word game sweeping the globe. Find what's hidden in plain sight.
BIQUADRATIC
Definition of BIQUADRATIC
adjective
Of a polynomial expression, involving only the zeroth, second, and fourth powers of a variable, as x + 3x + 2. Sometimes extended to any expression involving the biquadrate or fourth power (but no higher powers), as x − 4x + 3x − x + 1.
Wiktionary · CC BY-SA
Where it comes from
From bi- + quadratic.
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.
BIQUADRATIC in OUTLIER
Players have found it on 2 boards so far.
It first turned up on Day 150, 17 October 2026. The most recent board was Day 164, 31 October 2026. Nobody has seen it on a board for 13 days.
First ever to find it
on Day 150, 17 October 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
BIQUADRATIC starts with B and ends with C. Sorted, its letters read AABCDIIQRTU - the shape to hunt for when the grid is scrambled. I and A appear more than once. It uses Q - among the least common letters in written English.
Words that start BIQUADR
Its neighbours in the OUTLIER dictionary - shortest first.
Could you have found BIQUADRATIC?
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 150 - and most players walked straight past it.
Play today's OUTLIER