The rare daily word game sweeping the globe. Find what's hidden in plain sight.
CUPFERRONS
Definition of CUPFERRONS
Wiktionary has no entry for CUPFERRONS itself. This is its base word, CUPFERRON.
noun
The salt ammonium N-nitrosophenylhydroxylamine used to form complexes with metal ions
Wiktionary · CC BY-SA
Where it comes from
The origin recorded for CUPFERRON.
(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.
CUPFERRONS 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 4 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
CUPFERRONS starts with C and ends with S. Sorted, its letters read CEFNOPRRSU - the shape to hunt for when the grid is scrambled. R appears more than once, including a double letter.
Words that start CUPFER
Its neighbours in the OUTLIER dictionary - shortest first.
Could you have found CUPFERRONS?
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