Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Old English unweder
Old English un- (prefix)
Old English weder (prefix)
Proto-Germanic *unwedrą (inherited)
Old Norse úweðr (cognate)
Swedish oväder (cognate)

English unweather (inherited)
Middle English unweder (inherited)