Quack
Part of speech: noun
Definition: The sound made by a duck. A fraudulent healer or incompetent doctor of medicine, an impostor who claims to have qualifications to practice medicine. A charlatan. A doctor.
Part of speech: verb
Definition: To make a noise like a duck. To practice, commit quackery.
Part of speech: adjective
Definition: falsely presented as having medicinal powers.
Unqualified
Part of speech: adjective
Definition: not qualified, ineligible, unfit for a position or tasknot elaborated upon, undescribed
Example sentence: In the two novels I have published, it was my fortune at different times, and from different persons, to hear the most unqualified censure long before it was possible for me to hear the voice of the public. But my temper was not altered, nor my courage subdued.