Where does “nervosissimo” come from?

nervosissimo (Italian) comes from Italian nervoso, from Latin nervosus, from Latin nervus, from Proto-Indo-European (s)new-.

Ancestry of “nervosissimo”, step by step

StepLanguageWordMeaning
1Italiannervosonervous, nerve; irritable, touchy, cross; tense,...
2Latinnervosussinewy; nervous; vigorous, energetic
3LatinnervusA sinew, tendon, nerve, muscle; A cord, string or...
4Proto-Indo-European(s)new-—
Every word from Proto-Indo-European (s)new- →Every word from Latin nervus →Every word from Latin nervosus →