Where does “fiel” come from?

fiel (Old Spanish) comes from Latin fidēlis, from Latin fidēs, from Proto-Italic feiðos, from Proto-Indo-European bʰeydʰos, from Proto-Indo-European bʰeydʰ- — to compel, force; to trust.

Ancestry of “fiel”, step by step

fiel traces back through two separate lines of ancestry.

via Latin fidēlis

StepLanguageWordMeaning
1Latinfidēlisfaithful, loyal
2Latinfidēs—
3Proto-Italicfeiðosfaithful, reliable
4Proto-Indo-Europeanbʰeydʰosfaithful, trustworthy
5Proto-Indo-Europeanbʰeydʰ-to compel, force; to trust

via Vulgar Latin *felem

StepLanguageWordMeaning
1Vulgar Latin*felem—
2Latinfelgall bladder; gall, bile; poison
3Proto-Indo-Europeanǵʰelh₃-to flourish; green, yellow

Words derived from “fiel”

Every word from Proto-Indo-European bʰeydʰ- →Every word from Proto-Indo-European bʰeydʰos →Every word from Proto-Italic feiðos →