Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
aidiacht
←
Proto-Indo-European
*(H)yeh₁-
(root)
←
Latin
adiectīvus
(borrowed)
←
Old Irish
([[ainmm]]) [[adiecht]]
(inherited)
→
Irish
aidiachtach
(affix)
→
Irish
aidiachtúil
(affix)