Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
-st
←
Proto-Germanic
*-istaz
(inherited)
←
Proto-Germanic
*-ōstaz
(mention)
←
Middle High German
-est
(inherited)
←
Old High German
-ist
(inherited)
←
Old High German
-ōst
(mention)
←
Luxembourgish
(mention)
←
Luxembourgish
bescht
(mention)
←
Luxembourgish
meescht
(mention)
←
Luxembourgish
(mention)
→
Luxembourgish
viischt
(suffix)