Green’s Dictionary of Slang

sleazy adj.

also sleazo, sleazy-ass, sleezy
[SE sleazy, of textile fabrics or materials, thin or flimsy; ult. sleazy, of ropes or yarn, rough from projecting fibres]

1. [1930s+] of a person, unpleasant, poss. criminal, generally distasteful.

2. [1930s+] of a thing, dirty, run-down, decayed.

3. [1980s] (US juv.) lucky.

4. [1970s+] perverse, sexually or otherwise.