Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
unguessable
←
English
un
(prefix)
←
English
guessable
(prefix)
→
English
unguessably
(suffix)
→
English
unguessableness
(suffix)