Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
eisiau
←
Proto-Brythonic
*eisɨɣu
(inherited)
←
Latin
exiguus
(borrowed)
←
Middle Welsh
eisseu
(inherited)