Where does “*subrīdīre” come from?

*subrīdīre (Vulgar Latin) comes from Latin subrideo, from Latin sub-, from Proto-Indo-European upó, from Proto-Indo-European h₃ewp-.

Ancestry of “*subrīdīre”, step by step

StepLanguageWordMeaning
1LatinsubrideoI smile
2Latinsub-under, sub
3Proto-Indo-Europeanupóunder, below
4Proto-Indo-Europeanh₃ewp-—

Words derived from “*subrīdīre”

Every word from Proto-Indo-European h₃ewp- →Every word from Proto-Indo-European upó →Every word from Latin sub- →