Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Bulgarian
мътен
←
Bulgarian
мъ́тя
(affix)
←
Bulgarian
-ен
(affix)
←
Proto-Slavic
*mǫtьnъ
(inherited)