Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
abwyd
←
Proto-Brythonic
*abuɨd
(inherited)
←
Welsh
a-
(affix)
←
Welsh
bwyd
(affix)
→
Welsh
abwydyn
(affix)