Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Welsh dydd
← Breton deiz (cognate)
← Proto-Brythonic *dið (inherited)
← Proto-Celtic *dīyos (inherited)
← Proto-Indo-European *dyew- (root)
← Proto-Indo-European *dyḗws (inherited)
← Cornish dydh (cognate)
← Latin diēs (cognate)
← Old Welsh did (inherited)
← Old Irish día (cognate)
← Middle Welsh dyð (inherited)

→ Breton deiz (cognate)
→ Welsh dydd Gwener (affix)
→ Welsh dydd Iau (affix)
→ Welsh dydd Llun (affix)
→ Welsh dydd Mawrth (affix)
→ Welsh dydd Mercher (affix)
→ Welsh dydd Sadwrn (compound)
→ Welsh dydd Sul (compound)
→ Welsh dyddiadur (affix)
→ Welsh dyddiau (affix)
→ Welsh dyddlyfr (compound)
→ Welsh trennydd (link)
→ Welsh cyfddydd (affix)
→ Welsh dyddio (affix)
→ Welsh byrddydd (compound)
→ Welsh hirddydd (compound)
→ Irish dia (cognate)
→ Cornish dedh (cognate)
→ Latin dies (cognate)
→ Old Irish día (cognate)