Where does “thunderousness” come from?

thunderousness (English) comes from English thunderous, 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...

thunderousness (English): The state or condition of being thunderous;...

Definitions

  1. The state or condition of being thunderous;...

Ancestry of “thunderousness”, step by step

thunderousness traces back through two separate lines of ancestry.

via English thunderous

StepLanguageWordMeaning
1EnglishthunderousVery loud; that sounds like thunder; thundersome....
2EnglishthunderThe loud rumbling, cracking, or crashing sound...
3Middle EnglishthunderAlternative form of thonder
4Old EnglishÞunorthe Anglo-Saxon god of thunder, equivalent to Old Norse Þórr and Old High German Donar
5Proto-West Germanicþunrthunder
6Proto-GermanicÞunrazThor, god of thunder
7Proto-Indo-European(s)ten-to thunder, rustle, rumble, drone, groan; to...

via English Ness

StepLanguageWordMeaning
1EnglishNessAn Ulster princess and the mother of Conchobar mac Nessa and Findchoem in the Ulster Cycle of Irish mythology. Daughter of Eochaid Sálbuide. Also the mother of Cormac Cond Longas by incest with Conchobar mac Nessa
2Middle Englishnesse
3Old Englishnæsnot, not at all; not; first/third-person singular...
4Proto-Germanicnasjąfoothill; headland; cape
5Proto-Indo-Europeannéh₂snose
Every word from Proto-Indo-European (s)ten-