Where does “nobilissimo” come from?

nobilissimo (Italian) comes from Italian nobile, from Latin nōbilis, from Latin -bilis, from Proto-Italic -ðlis, from Proto-Indo-European -dʰlis, from Proto-Indo-European -dʰlom — Alternative form of *-trom; instrumental suffix;...

Ancestry of “nobilissimo”, step by step

StepLanguageWordMeaning
1Italiannobilearistocratic, noble, titled; noble, lofty; noble
2Latinnōbilisnoble, high-born
3Latin-bilis-ble
4Proto-Italic-ðlisForms adjectives from verb stems indicating capacity or worth of being acted on
5Proto-Indo-European-dʰlis
6Proto-Indo-European-dʰlomAlternative form of *-trom; instrumental suffix;...
Every word from Proto-Indo-European -dʰlom