Where does “fearsomeness” come from?

fearsomeness (English) comes from English fearsome, 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.

fearsomeness (English): The state or condition of being fearsome

Definitions

  1. The state or condition of being fearsome

Ancestry of “fearsomeness”, step by step

fearsomeness traces back through two separate lines of ancestry.

via English fearsome

StepLanguageWordMeaning
1Englishfearsomefrightening, especially in appearance; fearful,...
2English-someCharacterized by some specific condition or...
3Middle English-somsome; having a specific quality
4Old Englishsumsome
5Proto-West Germanic*sumsome
6Proto-Germanicsumazsome (one), a certain (one)
7Proto-Indo-Europeansem-together, one

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 sem-
fearsomeness — Etymology, Origin & Word History | Etymology Explorer