Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Saxon
thiod
←
Proto-Germanic
*þeudō
(inherited)
←
Proto-Indo-European
*tewtéh₂
(inherited)
→
Old Saxon
thiudisk
(affix)