noun
- plural of quack: the harsh sounds made by ducks
- plural of quack: people who falsely claim to have medical knowledge or skills
verb
- third person singular present of quack: makes the harsh sound of a duck
Examples
- The ducks’ loud quacks echoed across the pond.
- She heard several quacks coming from the marsh.
- The medical board warned patients about quacks selling fake cures.
- Many quacks prey on desperate people seeking miracle treatments.
- The duck quacks loudly when it sees food.
- Every morning, the mallard quacks to greet the sunrise.