Where does “supinely” come from?

supinely (English) comes from English supine, from Latin supīnus, from Proto-Indo-European upó, from Proto-Indo-European h₃ewp-.

supinely (English): in a supine way, with the head facing up

Definitions

  1. in a supine way, with the head facing up

Ancestry of “supinely”, step by step

supinely traces back through two separate lines of ancestry.

via English supine

StepLanguageWordMeaning
1EnglishsupineLying on its back; Reluctant to take action due...
2Latinsupīnuslying down with face upwards; supine, on one's back
3Proto-Indo-Europeanupóunder, below
4Proto-Indo-Europeanh₃ewp-—

via English ly

StepLanguageWordMeaning
1EnglishlyAbbreviation of light-year
2VietnameselyAlternative spelling of li
Every word from Proto-Indo-European h₃ewp- →Every word from Proto-Indo-European upó →Every word from Latin supīnus →