Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Latvian dzidrs
Ancient Greek φαιδρός (cognate)
Proto-Balto-Slavic *gīd- (mention)
Proto-Indo-European *gʷʰəid- (mention)
Proto-Indo-European *gʷʰīd- (mention)
Proto-Indo-European *gʷʰid- (mention)
Lithuanian giẽdras (cognate)
Lithuanian gaidrùs (mention)
Latvian gaišs (mention)

Latvian transparents (link)
Latvian Dzidra (mention)
Latvian šķidrs (mention)
Latvian skaidrs (mention)
Latvian dzidrums (suffix)