Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
septi
→
English
septilateral
(prefix)
→
English
septiform
(confix)
→
English
septisyllable
(prefix)
→
English
septangle
(prefix)
→
English
septivalent
(prefix)
→
English
septicentennial
(prefix)