Where does “thundersome” come from?

thundersome (English) comes from English some, from Middle English som, from Old English sum, from Proto-West Germanic *sum, from Proto-Germanic sumaz, from Proto-Indo-European sem- — together, one.

thundersome (English): Charactersied or marked by thunder

Definitions

  1. Charactersied or marked by thunder

Ancestry of “thundersome”, step by step

thundersome traces back through two separate lines of ancestry.

via English some

StepLanguageWordMeaning
1EnglishsomeA certain number, at least two; An indefinite...
2Middle Englishsomsome
3Old Englishsumsome
4Proto-West Germanic*sumsome
5Proto-Germanicsumazsome (one), a certain (one)
6Proto-Indo-Europeansem-together, one

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...
Every word from Proto-Indo-European sem-Every word from Proto-Germanic sumazEvery word from Proto-West Germanic *sum