Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
English skeptical
English skeptic (affix)
English -al (affix)

English skeptically (suffix)
English Euro-skeptical (prefix)
English Euroskeptical (prefix)
English unskeptical (prefix)
English nonskeptical (prefix)
English skeptimistic (blend)
English skepticalness (suffix)
English overskeptical (prefix)
English technoskeptical (prefix)
English skepticality (suffix)
Portuguese céptico (link)