Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
дурь
←
Proto-Slavic
*durь
(inherited)
→
Icelandic
dúr
(cognate)
→
Russian
дурной
(affix)
→
Russian
сдуру
(affix)
→
Russian
дуреть
(affix)