The rare daily word game sweeping the globe. Find what's hidden in plain sight.
ISOTACH
Definition of ISOTACH
noun
An isoline linking places on a map which have equal wind speed.
Wiktionary · CC BY-SA
Where it comes from
From iso- + Ancient Greek ταχύς (takhús, “fast”) (see tachy-).
Etymology via Wiktionary (CC BY-SA).
Word DNA
Line of descent
- Ancient Greek
- English
One recorded step before English.
Deepest traced root
2nd
of 59 source languages in OUTLIER
12.7%
of traced words share this origin (3,266)
branch · 12.7% 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.
ISOTACH in OUTLIER
Players have found it on 1 board so far.
It first turned up on Day 72, 31 July 2026. Nobody has seen it on a board for 56 days.
Built from these letters
ISOTACH starts with I and ends with H. Sorted, its letters read ACHIOST - the shape to hunt for when the grid is scrambled. No letter is used twice, which makes it an isogram.
Words that start ISOTAC
Its neighbours in the OUTLIER dictionary - shortest first.
Could you have found ISOTACH?
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