Synonyms for quack
Antonyms for quack
EXAMPLES FROM THE WEB FOR QUACK
The one object of the quack doctor is to size you up and see what you "are good for."
When all was said, a man in the presence of this quack did feel in the presence of a great man.
Partridge, cobbler, astrologer, almanac-maker and quack (died 1708).
As for his being a quack doctor, I see no great harm in that.
As a mountebank, a juggler, a quack doctor—I spurned the very idea.
If no pay is asked for the "stuff," the quack is seldom or ever a loser.
"You're the kind that hasn't feathers and doesn't say quack," replied Mally from below.
Cromwell was mad and a quack; Anselm, Becket, Goethe, ditto ditto.
Quack and Dupe, upper side and under of the selfsame substance.
The Cardinal sent an intimation that he would like to see the quack.
WORD ORIGIN
"to make a duck sound," 1610s, earlier quake (1520s), variant of quelke (early 14c.), of echoic origin (cf. Middle Dutch quacken, Old Church Slavonic kvakati, Latin coaxare "to croak," Greek koax "the croaking of frogs," Hittite akuwakuwash "frog"). Middle English on the quakke (14c.) meant "hoarse, croaking." Related: Quacked; quacking.