Synonyms:
quack(a)
Meaning: medically unqualified; "a quack doctor"
noun
meaning of the word
Synonyms:
quack
Meaning: an untrained person who pretends to be a physician and who dispenses medical advice
verb
meaning of the word
Synonyms:
quack
Meaning: utter quacking noises; "The ducks quacked"
Usage examples
quack! he tears them to pieces; so much so that at the end of five minutes there was not one left alive.
If real ducks be used as decoy-birds, the males should be tied in one place and the females in another, to induce them to quack.
All at once there began to go a sort of bustle among the bulrushes; a wild duck flew up with a quack, another followed, and soon over the whole surface of the marsh a great cloud of birds hung screaming and circling in the air.