Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Germanic
*slakwjaną
→
Danish
slukke
(inherited)
→
Westrobothnian
slökkj
(inherited)
→
Old Swedish
slækkia
(inherited)
→
Icelandic
slökkva
(inherited)
→
Swedish
släcka
(inherited)