Words that come from Irish fia-

12 words across 4 languages descend from Irish fia- — including fiaghabhar, fiari, auffieren, Fiavedeelinjsdakjsel, fieren, Auffiameddel, fia-úll, fiadow.

See the etymology of fia- itself →

Plautdietsch (7)

Irish (2)

Cornish (2)

Bavarian (1)