quack
Definitions
The characteristic harsh, raucous cry of a duck.
A person who dishonestly claims to have medical or other professional skills; a charlatan.
Examples
The duck let out a loud quack as it waddled toward the pond.
The doctor was exposed as a complete quack who had no medical training.
I could hear the ducks quack in the distance while we walked through the park.
Synonyms
Antonyms
expert professional specialist authority practitioner master adept