The rare daily word game sweeping the globe. Find what's hidden in plain sight.
CALTHROPS
Definition of CALTHROPS
noun
plural of calthrop
CALTROP · via calthrop
noun
A metal object, usually small, with spikes arranged so that, when thrown onto the ground, one always faces up as a threat to pedestrians, horses, and vehicles (also used as a heraldic charge).
Wiktionary · CC BY-SA
Word DNA
CALTHROPS inherits its ancestry from its root, CALTROP.
Line of descent
3 recorded generations before English.
Deepest traced root
1st
of 59 source languages in OUTLIER
30.6%
of traced words share this origin (25,330)
branch · 30.6% of traced words
How it is built
Same root, CALTROP · 5 relatives in the game
OUTLIER scores every word on how unusual it is, and that number is not published. Working it out at the board is the game.
CALTHROPS in OUTLIER
Players have found it on 9 boards so far.
It first turned up on Day 72, 31 July 2026. The most recent board was Day 163, 30 October 2026. Nobody has seen it on a board for 3 days.
First ever to find it
on Day 75, 3 August 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
CALTHROPS starts with C and ends with S. Sorted, its letters read ACHLOPRST - the shape to hunt for when the grid is scrambled. No letter is used twice, which makes it an isogram.
Could you have found CALTHROPS?
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 72 - and most players walked straight past it.
Play today's OUTLIER