Dirty, cheap, or not socially acceptable, especially relating to moral or sexual matters. (Cambridge Dictionary)
Lacking firmness of texture: Flimsy. (Merriam – Webster)
Carelessly made of inferior materials: Shoddy. (Merriam – Webster)
Marked by low character or quality. (Merriam – Webster)
(of a person or situation) sordid, corrupt, or immoral. (Oxford Dictionaries)
(of a place) squalid and seedy. (Oxford dictionaries)
If you describe a place as sleazy, you dislike it because it looks dirty and badly cared for, and not respectable. (Collins Dictionary)
If you describe something or someone as sleazy, you disapprove of them because you think they are not respectable and are rather disgusting. (Collins Dictionary)
How to be sleazy.
It is sleazy – movie – Wikipedia.
Sleazy reads – Flashbak.