Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
eu
→
Scottish Gaelic
euslaint
(prefix)
→
Scottish Gaelic
eu-dòchas
(prefix)
→
Scottish Gaelic
eu-cèillidh
(prefix)
→
Scottish Gaelic
eu-dòchasachd
(prefix)