Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
schwieren
←
German
schwören
(cognate)
←
English
swear
(cognate)
←
Proto-Germanic
*swarjaną
(inherited)
←
Old High German
sweren
(inherited)
←
Dutch
zweren
(cognate)
→
Luxembourgish
beschwieren
(affix)
→
Luxembourgish
verschwieren
(prefix)