n. a flamboyant deceiver; one who attracts customers with tricks or jokes

n. an untrained person who pretends to be a physician and who dispenses medical advice

n. someone who has committed a crime or has been legally convicted of a crime

n. a person who professes beliefs and opinions that he or she does not hold in order to conceal his or her real feelings or motives

n. a claimant to the throne or to the office of ruler (usually without just title)

n. a criminal who takes property belonging to someone else with the intention of keeping it or selling it