Where does “feeil” come from?

feeil (Old French) 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 “feeil”, step by step

StepLanguageWordMeaning
1Latinfidēlisfaithful, loyal
2Latinfidēs—
3Proto-Italicfeiðosfaithful, reliable
4Proto-Indo-Europeanbʰeydʰosfaithful, trustworthy
5Proto-Indo-Europeanbʰeydʰ-to compel, force; to trust
Every word from Proto-Indo-European bʰeydʰ- →Every word from Proto-Indo-European bʰeydʰos →Every word from Proto-Italic feiðos →