Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
dooisht
←
Irish
dúisigh
(cognate)
←
Scottish Gaelic
dùisg
(cognate)
→
Manx
sheer-ghooisht
(prefix)
→
Manx
neughooist
(prefix)
→
Manx
aaghooisht
(prefix)