- The definition of a sleaze is an immoral, corrupt or dishonest person.
A lying and corrupt person is an example of a sleaze.
Origin of sleazeBack-formation from sleazy.
(countable and uncountable, plural sleazes)
(third-person singular simple present sleazes, present participle sleazing, simple past and past participle sleazed)
Back-formation from sleazy, originally used to describe the thinness and low quality of cloth.