quack
quack 1 A practitioner who suggests for prevention or treatment of disease substances or devices that are known to be ineffective. 2 Someone who pretends to be able to diagnose or heal people but is unqualified and incompetent.
quack 1 A practitioner who suggests for prevention or treatment of disease substances or devices that are known to be ineffective. 2 Someone who pretends to be able to diagnose or heal people but is unqualified and incompetent.