Where does “astutissimo” come from?

astutissimo (Italian) comes from Italian astuto, from Latin astūtus, from Latin -tus, from Proto-Italic -tus, from Proto-Indo-European -tus — Derives action nouns from verb roots.

Ancestry of “astutissimo”, step by step

StepLanguageWordMeaning
1Italianastutoastute, shrewd
2Latinastūtuscrafty, cunning, shrewd, clever, tricksy
3Latin-tusForms the past participle of verbs; Forms...
4Proto-Italic-tus—
5Proto-Indo-European-tusDerives action nouns from verb roots
Every word from Proto-Indo-European -tus →Every word from Latin -tus →Every word from Latin astūtus →