Where does “dettatomi” come from?

dettatomi (Italian) comes from Italian dettato, from Latin dictātus, from Latin -tus, from Proto-Italic -tus, from Proto-Indo-European -tus — Derives action nouns from verb roots.

Ancestry of “dettatomi”, step by step

StepLanguageWordMeaning
1Italiandettatopast participle of dettare; dictation
2Latindictātusrepeated, said often, having been repeated
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