Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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English rud
Old English rudian (inherited)
Old English rudu (mention)
English red (mention)
English rudden (link)
English ruddy (link)
Middle English rudden (inherited)
Middle English ruden (mention)
Proto-Germanic *rudāną (inherited)
Proto-Indo-European *h₁rewdʰ- (root)
Proto-Indo-European *h₁rudʰéh₁ti (inherited)
Proto-Indo-European *h₁rewdʰ- (mention)
Old Cornish rud (cognate)
Old Irish rúad (cognate)

English ruddy (suffix)
English ruddle (affix)
English ruddock (suffix)
English ruddock (mention)
English rudden (affix)