Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Latin viginti
Breton ugent (cognate)
Welsh ugain (cognate)
Ancient Greek εἴκοσι (cognate)
Proto-Indo-European (inherited)
Proto-Indo-European (mention)
Proto-Indo-European *dwi(h₁)dḱm̥ti (mention)
Proto-Italic *wīgentī (inherited)
Sanskrit विंशति (cognate)
Old Irish fiche (cognate)
Tocharian A wiki (cognate)

English nonagenarian (mention)
English vigen- (mention)
English vigintile (mention)
English vicenary (mention)
Corsican vinti (inherited)
Extremaduran venti (inherited)
Albanian -zet (cognate)