Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
taisg
←
Middle Irish
taiscid
(inherited)
←
Old Irish
do·coisig
(inherited)
←
Old Irish
do·osaig
(mention)
←
Old Irish
saigid
(mention)