Where does “purissimo” come from?

purissimo (Italian) comes from Italian puro, from Latin puro, from Latin -ō, from Proto-Indo-European -ō — Derives nouns from roots.

Ancestry of “purissimo”, step by step

StepLanguageWordMeaning
1Italianpuropure
2Latinpurodative masculine singular of pūrus; dative neuter...
3Latin-ōsuffixed to nouns or adjectives. Originally a-stem nouns. Later extended to nouns with other stems. Forms regular first-conjugation verbs
4Proto-Indo-European-ōDerives nouns from roots
Every word from Proto-Indo-European -ō →Every word from Latin -ō →Every word from Latin puro →