Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
feidil
←
Proto-Celtic
*wodīlis
(inherited)
←
Welsh
gweddill
(cognate)
→
Welsh
gweddill
(cognate)
→
Old Irish
feidligidir
(affix)