Meaning : Endorsed authoritatively as having met certain requirements.
Example :
A certified public accountant.
Lacking requisite official documentation or endorsement.
uncertifiedMeaning : Fit to be certified as insane (and treated accordingly).
Synonyms : certifiable
Meaning : Holding appropriate documentation and officially on record as qualified to perform a specified function or practice a specified skill.
Example :
A registered pharmacist.
A registered hospital.
Synonyms : qualified