Where does “portentōsus” come from?

portentōsus (Latin) comes from Latin portentus, from Latin portendo, from Latin por-, from Proto-Italic por-, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.

Ancestry of “portentōsus”, step by step

StepLanguageWordMeaning
1Latinportentusindicated, pointed out; predicted, foretold
2LatinportendoI indicate, point out; I predict, foretell,...
3Latinpor-forth, forward, further, onward
4Proto-Italicpor-forth, forward
5Proto-Indo-Europeanper-before, in front; first; to go through
6Proto-Indo-Europeanpr̥tóspassed , crossed

Words derived from “portentōsus

Every word from Proto-Indo-European pr̥tósEvery word from Proto-Indo-European per-Every word from Latin por-