Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
North Frisian
ek
←
Danish
ikke
(cognate)
←
Faroese
ikki
(cognate)
←
Norwegian Nynorsk
ikkje
(cognate)
←
Old Norse
ekki
(derived)