Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
French
indéclinable
←
French
in-
(affix)
←
French
déclinable
(affix)
→
English
indeclinable
(derived)
→
Romanian
indeclinabil
(borrowed)