Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Irish fo-
← Proto-Celtic *uɸo- (derived)
← Irish faoi (mention)
← Proto-Indo-European *upo (derived)
← Old Irish fo- (derived)

→ Irish fochéimí (affix)
→ Irish fomhuireán (affix)
→ Irish fo-bhaile (affix)
→ Irish fo-uirbeach (affix)
→ Irish fo-éadaí (affix)
→ Irish fo-abhainn (affix)
→ Irish fo-dhordaire (affix)
→ Irish fo-abhac (affix)
→ Irish fo-fhathach (affix)
→ Irish fopharagraf (affix)
→ Irish fo-alt (affix)
→ Irish fo-artach (affix)
→ Irish fo-cheannteideal (affix)
→ Irish fotheideal (affix)
→ Irish fo-mhírcheann (affix)
→ Irish fo-rúibric (affix)
→ Irish fo-chomhfhios (affix)
→ Irish fo-ordaithe (affix)
→ Irish fo-ordaigh (affix)
→ Irish fo-ríomhchlár (affix)
→ Irish fo-theochriosach (affix)
→ Irish fothrópaiceach (affix)
→ Irish fochaighdeánach (affix)
→ Irish fochlásal (affix)
→ Irish foghrúpa (affix)
→ Irish foshonach (affix)
→ Irish fothoghchán (affix)
→ Irish fostríoc (affix)
→ Irish foshruth (affix)
→ Irish fochóras (affix)
→ Irish fochatagóir (affix)
→ Irish fostruchtúr (affix)
→ Irish fonóta (affix)
→ Irish fo-chraicneach (affix)
→ Irish fopholach (affix)
→ Irish fobhealach (affix)
→ Irish fo-ideamorfach (affix)
→ Irish fochlóirít (affix)
→ Irish fo-roghchlár (affix)
→ Irish fochlár (affix)