Definition of quacky in US English:

quacky

adjective

informal
  • Inclined to or characterized by quackery.

adjective

  • That is, or is like, a quack; having the harsh quality characteristic of a duck's cry.

Origin

Mid 19th century; earliest use found in The Southern Literary Messenger. From quack + -y<br>late 19th century; earliest use found in Forum. From quack + -y.

Pronunciation

quacky

/ˈkwaki/