Where does “fin” come from?

fin (Middle English) comes from Old French fin, from Latin fīnis, from Proto-Indo-European dʰnh₂-.

Ancestry of “fin”, step by step

fin traces back through two separate lines of ancestry.

via Old French fin

StepLanguageWordMeaning
1Old Frenchfinfine, delicate
2Latinfīnisend
3Proto-Indo-Europeandʰnh₂-—

via Old English Finn

StepLanguageWordMeaning
1Old EnglishFinnSami
2Proto-Germanicfinnōflipper; fin
3Proto-Indo-European(s)pīn-backbone, dorsal fin; backbone; dorsal fin

Words derived from “fin”

Every word from Proto-Indo-European dʰnh₂- →Every word from Latin fīnis →Every word from Old French fin →
fin — Etymology, Origin & Word History | Etymology Explorer