Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle Irish
eigrecht
←
Middle Irish
eigre
(suffix)
←
Middle Irish
acht
(suffix)
→
Irish
oidhreacht
(inherited)
→
Scottish Gaelic
oighreachd
(inherited)
→
Manx
eiraght
(inherited)