Where does “thundercrash” come from?

thundercrash (English) comes from English thunder, from Middle English thunder, from Old English Þunor, from Proto-West Germanic þunr, from Proto-Germanic Þunraz, from Proto-Indo-European (s)ten- — to thunder, rustle, rumble, drone, groan; to...

Ancestry of “thundercrash”, step by step

thundercrash traces back through two separate lines of ancestry.

via English thunder

StepLanguageWordMeaning
1EnglishthunderThe loud rumbling, cracking, or crashing sound...
2Middle EnglishthunderAlternative form of thonder
3Old EnglishÞunorthe Anglo-Saxon god of thunder, equivalent to Old Norse Þórr and Old High German Donar
4Proto-West Germanicþunrthunder
5Proto-GermanicÞunrazThor, god of thunder
6Proto-Indo-European(s)ten-to thunder, rustle, rumble, drone, groan; to...

via English crash

StepLanguageWordMeaning
1EnglishcrashA sudden, intense, loud sound, as made for...
2Middle Englishcrasshen
Every word from Proto-Indo-European (s)ten-