Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
nidder
←
German
nieder
(cognate)
←
English
nether
(cognate)
←
Proto-Germanic
*niþer
(inherited)
←
Middle High German
nider
(inherited)
←
Old High German
nidar
(inherited)
←
Icelandic
niður
(cognate)
←
Dutch
neder
(cognate)
→
Luxembourgish
nidder-
(mention)