Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
báidid
←
Proto-Celtic
*bādīti
(inherited)
→
Irish
báigh
(inherited)
→
Scottish Gaelic
bàth
(inherited)
→
Old Irish
dobádi
(affix)
→
Old Irish
ardíbdai
(affix)