The rare daily word game sweeping the globe. Find what's hidden in plain sight.
THUNDER
Definition of THUNDER
noun
The loud rumbling, cracking, or crashing sound caused by expansion of rapidly heated air around a lightning bolt.
Wiktionary · CC BY-SA
Where it comes from
From Middle English thunder, thonder, thundre, thonre, thunnere, þunre, from Old English þunor (“thunder”), from Proto-West Germanic *þunr, from Proto-Germanic *þunraz, from Proto-Indo-European *(s)ten-, *(s)tenh₂- (“to thunder”). Compare astound, astonish, stun. Germanic cognates include West Frisian tonger, Dutch donder, German Donner, Old Norse Þórr (English Thor), Danish torden, Norwegian Nynorsk tore. Other cognates include Persian تندر (tondar), Latin tonō, detonō, Ancient Greek στένω (sténō), στενάζω (stenázō), στόνος (stónos), Στέντωρ (Sténtōr), Irish torann, Welsh taran, Gaulish Taranis. Doublet of donner, Thunor, and Thor.
Etymology via Wiktionary (CC BY-SA).
Word DNA
Line of descent
4 recorded generations before English.
Deepest traced root
2nd
of 59 source languages in OUTLIER
14.4%
of traced words share this origin (11,166)
How it is built
Same root, THUNDER · 13 relatives in the game
Its etymology also names Ancient Greek, Danish, Dutch, Irish, Latin, Norwegian, Old Norse, Persian and 1 more.
Every Proto-Indo-European word → · The Word DNA of OUTLIER →
OUTLIER scores every word on how unusual it is, and that number is not published. Working it out at the board is the game.
THUNDER in OUTLIER
Players have found it on 54 boards so far. 106 players have found it across Outlier's history.
It first turned up on Day 1, 22 May 2026. The most recent board was Day 152, 19 October 2026. Nobody has seen it on a board for 3 days.
First found by a player on Day 1, 22 May 2026.
Built from these letters
THUNDER starts with T and ends with R. Sorted, its letters read DEHNRTU - the shape to hunt for when the grid is scrambled. No letter is used twice, which makes it an isogram.
Words that start THUNDE
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 1
Could you have found THUNDER?
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 1 - and most players walked straight past it.
Play today's OUTLIER