Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Italian stupido
← Proto-Indo-European *(s)tewp- (root)
← Latin stupidus (mention)

→ Italian stupidaggine (suffix)
→ Italian stupidità (suffix)
→ Italian stupidamente (suffix)
→ Italian istupidire (affix)
→ Italian stupidata (suffix)
→ Italian stupidello (suffix)
→ Italian stupidino (suffix)
→ Maltese stupidu (borrowed)