Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Czech
tupý
←
Proto-Slavic
*tǫpъ
(inherited)
→
Czech
tupec
(affix)
→
Czech
tupoun
(affix)
→
Czech
tupoň
(affix)