Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle English
ydel
←
Old English
īdel
(inherited)
←
Proto-Germanic
*īdalaz
(inherited)
←
Proto-West Germanic
*īdal
(inherited)
→
English
idle
(mention)
→
Middle English
ydelly
(affix)
→
Middle English
ydelschipe
(affix)
→
Middle English
ydelnesse
(affix)
→
Middle English
idelhed
(affix)