Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Welsh -iad
← Proto-Brythonic *-ad (inherited)
← Proto-Brythonic (mention)
← Proto-Brythonic (mention)
← Cornish -yas (cognate)

→ Welsh amrantiad (affix)
→ Welsh cynaniad (affix)
→ Welsh cyfarwyddiad (affix)
→ Welsh canlyniad (affix)
→ Welsh canfyddiad (affix)
→ Welsh cyfeiriad (affix)
→ Welsh ychwanegiad (affix)
→ Welsh digwyddiad (affix)
→ Welsh arddodiad (affix)
→ Welsh dyfodiad (affix)
→ Welsh cysylltiad (affix)
→ Welsh amrywiad (affix)
→ Welsh croeshoeliad (affix)
→ Welsh terfyniad (affix)
→ Welsh ymasiad (affix)
→ Welsh datblygiad (affix)
→ Welsh goresgyniad (affix)
→ Welsh offeiriad (affix)
→ Welsh cyfrifiad (affix)
→ Welsh arweiniad (affix)
→ Welsh arholiad (affix)
→ Welsh derbyniad (affix)
→ Welsh peniad (affix)
→ Welsh disgrifiad (affix)
→ Welsh dadansoddiad (affix)
→ Welsh diflaniad (affix)
→ Welsh honiad (affix)
→ Welsh haeriad (affix)
→ Welsh goddefiad (affix)
→ Welsh syniad (affix)
→ Welsh ymholiad (affix)
→ Welsh adroddiad (affix)
→ Welsh casgliad (affix)
→ Welsh croesiad (affix)
→ Welsh ymchwiliad (affix)
→ Welsh ymgynghoriad (affix)
→ Welsh bwriad (affix)
→ Welsh israniad (affix)
→ Welsh toriad (affix)
→ Welsh gostyngiad (affix)