Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Ancient Greek πετάννυμι
Avestan 𐬞𐬀𐬚𐬀𐬥𐬀 (cognate)
Old English fæþm (cognate)
English fathom (cognate)
Proto-Indo-European *peth₂- (root)
Proto-Indo-European *peth₂- (derived)
Latin pateō (cognate)
Latin patulus (mention)
Latin pandō (mention)
Albanian petë (cognate)

English fathom (cognate)
Old English fæþm (cognate)
Greek πεταλούδα (derived)
Ancient Greek πέταλον (mention)
Ancient Greek πέτασος (mention)
Ancient Greek πέτευρον (mention)
Latin pateo (cognate)
Latin petilus (cognate)