Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
unidiomaticity
←
English
un
(prefix)
←
English
idiomaticity
(prefix)
←
English
unidiomatic
(suffix)
←
English
ity
(suffix)