Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
German
unsauber
←
German
un
(prefix)
←
German
sauber
(prefix)
→
Old English
unsyfre
(cognate)
→
German
Unsauberkeit
(suffix)