Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Indo-Portuguese
já
←
Proto-Indo-European
*yē
(inherited)
←
Latin
iam
(inherited)
←
Portuguese
já
(inherited)
←
Old Portuguese
ja
(inherited)