Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Irish ach
← Proto-Celtic *ektos (inherited)
← Irish acht (alter)
← Irish (alter)
← Irish obsolete (alter)
← Irish ach oiread (link)
← Irish ách (alter)
← Proto-Indo-European *h₁eǵʰs (inherited)
← Old Irish acht (inherited)

→ Irish gealtach (suffix)
→ Irish deilgneach (suffix)
→ Irish ilchumasach (suffix)
→ Irish réaltach (suffix)
→ Irish réaltógach (suffix)
→ Irish rósach (suffix)
→ Irish spágach (suffix)
→ Irish sinsearach (suffix)
→ Irish leithscéalach (suffix)
→ Irish hidrigineach (suffix)
→ Irish oighreach (suffix)
→ Irish athraitheach (suffix)
→ Irish iompaitheach (suffix)
→ Irish dubhach (suffix)
→ Irish dubhach (suffix)
→ Irish daltach (suffix)
→ Irish éadálach (suffix)
→ Irish homafónach (suffix)
→ Irish péacógach (suffix)
→ Irish aontumhach (suffix)
→ Irish réadach (suffix)
→ Irish leictreonach (suffix)
→ Irish oileánach (suffix)
→ Irish Airgintíneach (suffix)
→ Irish rannpháirteach (suffix)
→ Irish substainteach (suffix)
→ Irish iartharach (suffix)
→ Irish oirthearach (suffix)
→ Irish cóngarach (suffix)
→ Irish scagthach (suffix)
→ Irish scagach (suffix)
→ Irish antaigineach (suffix)
→ Irish reiligiúnach (suffix)
→ Irish néaróiseach (suffix)
→ Irish hiopnóiseach (suffix)
→ Irish néarailgeach (suffix)
→ Irish lúbánach (suffix)
→ Irish hipeacoindreach (suffix)
→ Irish hipideirmeach (suffix)
→ Irish hipifiseach (suffix)