Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Yiddish
דאָך
←
Proto-Germanic
*þauh
(inherited)
←
Middle High German
doch
(inherited)
←
Old High German
doh
(inherited)