Where does “son” come from?

son (Old Portuguese) comes from Latin sunt, from Latin sum, from Proto-Italic ezom, from Proto-Indo-European h₁ésmi, from Proto-Indo-European h₁ēs- — to be.

Ancestry of “son”, step by step

StepLanguageWordMeaning
1Latinsuntthird-person plural present active indicative of...
2Latinsumto be, exist, have; to be there; to go
3Proto-Italicezomto be
4Proto-Indo-Europeanh₁ésmifirst-person singular present indicative of...
5Proto-Indo-Europeanh₁ēs-to be

Words derived from “son”

Every word from Proto-Indo-European h₁ēs- →Every word from Proto-Indo-European h₁ésmi →Every word from Proto-Italic ezom →