The term 'quack' is used to describe a person who pretends to have medical knowledge or expertise. CACKLE, with six letters, is a loud, harsh sound made by a duck or goose. DECEIVER, with eight letters, is someone who deliberately deceives or misleads others. Quacksalver, with eleven letters, is an archaic term for a CHARLATAN or quack. MOUNTEBANK, with ten letters, is a person who sells fraudulent goods or services. FRAUD, with five letters, is an intentional deception made for personal gain. CRY, with three letters, is a loud utterance of emotion. CHEAT, with five letters, is to act dishonestly or unfairly in order to gain an advantage. DOCTOR, with six letters, is a person qualified to practice medicine. CHARLATAN, with nine letters, is a person who pretends to have knowledge or skill that they do not possess. FAKER, with five letters, is someone who pretends to be something they are not. FAKE, with four letters, is something that is not genuine. Phony, with five letters, is something that is not genuine or real.