Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
mono-
←
Ancient Greek
μόνος
(derived)
→
Portuguese
monogamia
(affix)
→
Portuguese
monozigótico
(affix)
→
Portuguese
monossilábico
(affix)
→
Portuguese
monoteístico
(affix)
→
Portuguese
monocasta
(affix)