Where does “fo-” come from?

fo- (Old Irish) comes from Old Irish canaid, from Proto-Celtic kaneti, from Proto-Indo-European keh₂n- — to sing.

fo- (Old Irish): sub-, under-

Definitions

  1. sub-, under-

Ancestry of “fo-”, step by step

fo- traces back through two separate lines of ancestry.

via Old Irish canaid

StepLanguageWordMeaning
1Old Irishcanaidto sing
2Proto-Celtickanetito sing
3Proto-Indo-Europeankeh₂n-to sing

via Proto-Celtic uɸo-

StepLanguageWordMeaning
1Proto-Celticuɸo-sub-, under
2Proto-Indo-Europeanupóunder, below
3Proto-Indo-Europeanh₃ewp-—

Words derived from “fo-”

Every word from Proto-Indo-European keh₂n- →Every word from Proto-Celtic kaneti →Every word from Old Irish canaid →