n. 1 charlatan, impostor, pretender, fake(r), fraud, Colloq phoney or US also phony The quack diagnosed Franny as having appendicitis, but it turned out that she was pregnant
adj. 2 fake, fraudulent, sham, counterfeit, Colloq phoney or US also phony: Are you still going to see that quack doctor - the one who told you to take aspirin to relieve the pain from your ulcer?