Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
synio
←
Proto-Brythonic
*sɨnhɨd
(inherited)
←
Latin
sentiō
(derived)
←
Middle Welsh
synnyeit
(inherited)
→
Welsh
syniad
(affix)
→
Welsh
cydsynio
(affix)
→
Welsh
synnu
(mention)