Where does “fianĉamiko” come from?

fianĉamiko (Esperanto) comes from Esperanto fianĉo, from French fiancé, from French fiancer, from Italian fidanzare, from Italian fidanza, from Italian fidare, from Vulgar Latin fidare, from Latin fīdō — to compel, force; to trust.

fianĉamiko (Esperanto): best man, groomsman

Definitions

  1. best man, groomsman

Ancestry of “fianĉamiko”, step by step

fianĉamiko traces back through two separate lines of ancestry.

via Esperanto fianĉo

StepLanguageWordMeaning
1Esperantofianĉofiancé; fiancé "or" fiancée
2Frenchfiancéengaged; fiancé; past participle of fiancer
3Frenchfiancerto get engaged
4Italianfidanzareto affiance, to promise, to betroth; to assure
5Italianfidanzatrust, faith; safe-conduct; third-person singular...
6Italianfidareto entrust something to someone; see affidare; to...
7Vulgar Latinfidare
8Latinfīdōto trust, put confidence in
9Proto-Italicfeiðōto trust
10Proto-Indo-Europeanbʰéydʰetito trust
11Proto-Indo-Europeanbʰeydʰ-to compel, force; to trust

via Esperanto amiko

StepLanguageWordMeaning
1Esperantoamikofriend
2Latinamīcusfriendly, well-disposed, amicable
3Latinamōto love
4LatinDeusGod
5Latindẹ̄vos
6Old Latindeivosgod, deity
7Proto-Italicdeiwosgod, deity
8Proto-Indo-Europeandeywósgod
9Proto-Indo-Europeandyew-to be bright; sky, heaven
Every word from Proto-Indo-European bʰeydʰ-