The rare daily word game sweeping the globe. Find what's hidden in plain sight.
COPPERAS
Definition of COPPERAS
noun
Any of various metallic sulphates formed from the reaction of sulfur with iron, zinc, or copper, especially solutions of such compounds misunderstood as a mediator or catalyst for the transmutation of iron into copper &c.
Wiktionary · CC BY-SA
Where it comes from
From Middle English coperas, coperose (“any metallic sulfate”), from Medieval Latin cuprosa directly or via Old French coperose, from Medieval Latin aqua cuprosa (“cupreous water”), from Latin cuprum (“copper”) + -osa (“-ose: forming related adjectives”). Fanciful derivations from cupreous terms involving Latin rosa (“rose”) are mistaken.
Etymology via Wiktionary (CC BY-SA).
Word DNA
Line of descent
3 recorded generations before English.
Deepest traced root
9th
of 59 source languages in OUTLIER
2.9%
of traced words share this origin (2,433)
branch · 12.8% of traced words
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.
COPPERAS in OUTLIER
Players have found it on 1 board so far.
It first turned up on Day 159, 26 October 2026. Nobody has seen it on a board for 10 days.
First ever to find it
on Day 159, 26 October 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
COPPERAS starts with C and ends with S. Sorted, its letters read ACEOPPRS - the shape to hunt for when the grid is scrambled. P appears more than once, including a double letter.
Words that start COPPER
Its neighbours in the OUTLIER dictionary - shortest first.
Could you have found COPPERAS?
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 159 - and most players walked straight past it.
Play today's OUTLIER