Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old English
untwifeald
←
Old English
un-
(affix)
←
Old English
twifeald
(affix)
←
Old High German
unzwifalt
(cognate)