Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun quack

2 senses of quack

Sense 1
quack -- (an untrained person who pretends to be a physician and who dispenses medical advice)
       => doctor, doc, physician, MD, Dr., medico -- (a licensed medical practitioner; "I felt so bad I went to see my doctor")
       => mountebank, charlatan -- (a flamboyant deceiver; one who attracts customers with tricks or jokes)

Sense 2
quack -- (the harsh sound of a duck)
       => sound -- (the sudden occurrence of an audible event; "the sound awakened them")

Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb quack

2 senses of quack

Sense 1
quack -- (utter quacking noises; "The ducks quacked")
       => utter, emit, let out, let loose -- (express audibly; utter sounds (not necessarily words); "She let out a big heavy sigh"; "He uttered strange sounds that nobody could understand")

Sense 2
quack -- (act as a medical quack or a charlatan)
       => act, behave, do -- (behave in a certain manner; show a certain behavior; conduct or comport oneself; "You should act like an adult"; "Don't behave like a fool"; "What makes her do this way?"; "The dog acts ferocious, but he is really afraid of people")

Antonyms of adj quack

1 sense of quack

Sense 1
quack (prenominal) -- (medically unqualified; "a quack doctor")

INDIRECT (VIA unqualified) -> qualified -- (meeting the proper standards and requirements and training for an office or position or task; "many qualified applicants for the job")

Similarity of adj quack

1 sense of quack

Sense 1
quack (prenominal) -- (medically unqualified; "a quack doctor")
       => unqualified (vs. qualified) -- (not meeting the proper standards and requirements and training)