Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
oitenta
←
Latin
octāgintā
(inherited)
←
Latin
octōgintā
(mention)
←
Old Portuguese
oytenta
(inherited)
←
Old Portuguese
oyteenta
(mention)
←
Old Portuguese
oitaenta
(mention)