Smut Share definition Flag An derogative term commonly used in the Pennsylvania area, to define a female that is very promiscuous, and has many sexual relations with many partners. Most commonly compared to the word "Slut". Person 1: Aye, you know I cuffed that girl Katie.Person 2: Whaaaattt nigga she a smut ass jawn. You know everybody in the hood hit that. Smut by anonymous June 20, 2021 Get the Smut mug.