(of a voice or sound) That resembles the quack of a duck.
Fraudulent; characterised by or using the methods of quackery.
- 1998 September 9, Joni Mitchell, interview quoted in 2003, Alan Hecht, Polio, page 72,
I know this sounds real quacky but they did some mysterious good to the problem and I feel fine.
(US, of land or a crop) Infested with quackgrass.
- 1859, The Cultivator, Volume 7, 3rd Series, page 54,
After the first hoeing of a quacky crop, it is often well to go over it lightly in the middle of a hot day, just skimming the surface of the soil, and cutting off the young grass.
- 1914, New York (State) Department of Agriculture, Annual Report, Volume 1, Part 2, page 544,
When would you advise plowing sandy soil that is quacky for beans?