Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
at
←
Scottish Gaelic
at-bràghad
(link)
←
Scottish Gaelic
at-chuisle
(link)
←
Scottish Gaelic
at-fhuachd
(link)
←
Scottish Gaelic
at-reum
(link)
←
Old Irish
att
(inherited)
←
Old Irish
attaid
(inherited)
←
Old Irish
att
(mention)