Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Ido ad
Spanish a (borrowed)
French à (borrowed)
Proto-Indo-European *ád (derived)
Italian ad (borrowed)
Latin ad (derived)

Ido la (link)
Ido ad- (mention)
Ido adjuntar (prefix)
Ido adportar (prefix)
Ido advokar (prefix)
Ido adsur (prefix)
Ido adpozo (prefix)
Ido adpozar (prefix)
Ido aden (prefix)
Ido adfluar (prefix)
Ido adjustigar (confix)
Ido advere (prefix)
Ido adsub (prefix)
Ido adibe (compound)
Ido adminime (affix)
Ido adjacanta (prefix)