Where does “fo-” come from?

fo- (Scottish Gaelic) comes from Scottish Gaelic fo, from Old Irish fo, from Proto-Celtic uɸo, from Proto-Indo-European upó, from Proto-Indo-European h₃ewp-.

fo- (Scottish Gaelic): sub-, under-, infra-

Definitions

  1. sub-, under-, infra-

Ancestry of “fo-”, step by step

StepLanguageWordMeaning
1Scottish Gaelicfounder, below, beneath; under the influence of
2Old Irishfounder, beneath; towards; through, throughout
3Proto-Celticuɸounder, below
4Proto-Indo-Europeanupóunder, below
5Proto-Indo-Europeanh₃ewp-—

Words derived from “fo-”

Every word from Proto-Indo-European h₃ewp- →Every word from Proto-Indo-European upó →Every word from Proto-Celtic uɸo →