Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
desconhecer
←
Portuguese
des
(prefix)
←
Portuguese
conhecer
(prefix)
←
Old Portuguese
desconnocer
(mention)
→
Portuguese
desconhecimento
(suffix)