Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Latin certus
← Proto-Indo-European *krey- (root)
← Latin cernō (mention)

→ English certain (derived)
→ English certitude (derived)
→ English ascertain (derived)
→ English certainty (derived)
→ English certes (derived)
→ Asturian ciertu (inherited)
→ Catalan cert (inherited)
→ Welsh certh (derived)
→ Dalmatian čertjoin (inherited)
→ Dalmatian ciart (inherited)
→ Esperanto certa (derived)
→ Spanish cierto (inherited)
→ Spanish certificar (derived)
→ Spanish certidumbre (mention)
→ French certain (inherited)
→ French certitude (derived)
→ French certifier (derived)
→ Middle French certitude (derived)
→ Old French certain (inherited)
→ Old French cert (inherited)
→ Old French certifier (derived)
→ Friulian ciert (inherited)
→ Irish ceart (derived)
→ Scottish Gaelic ceart (derived)
→ Galician certo (inherited)
→ Galician certidume (mention)
→ Manx kiart (derived)
→ Istriot sierto (inherited)
→ Italian certo (inherited)
→ Italian certificare (mention)
→ Latin certo (affix)
→ Latin certo (affix)
→ Latin certe (suffix)
→ Latin certitudo (suffix)
→ Latin certificatum (compound)
→ Ladin cert (inherited)
→ Norman cèrtain (derived)
→ Old Occitan certan (derived)
→ Portuguese certo (inherited)
→ Portuguese certeza (mention)
→ Romanian cert (borrowed)
→ Sardinian tzertu (inherited)
→ Sardinian chertu (inherited)
→ Sardinian chertu (inherited)
→ Old Irish cert (borrowed)