Quack

kwak, v. i. [quacked (kwakt), quacking.] To cry like the common domestic duck; to boast; to you? — act as a quack. — n. The cry of the domestic duck; a boastful pretender to medical skill; an empiric; one who pretends to knowledge of any kind, not a po e ed; mountebank; charlatan. — a. Pert, to quackery; used by quacks. — Quack'ery, -er-T, n. Practice of a quack; empiricism. and rel- Quad rage sima, rate.