Meaning : An untrained person who pretends to be a physician and who dispenses medical advice.
Meaning : The harsh sound of a duck.
Meaning : Utter quacking noises.
Example :
The ducks quacked.
Meaning : Act as a medical quack or a charlatan.
Quack ka meaning, vilom shabd, paryayvachi aur samanarthi shabd in Marathi. Quack ka matlab kya hota hai?