If you describe something as seamy, you mean that it involves unpleasant aspects of life such as crime, sex, or violence. Hamburg's seamy St Pauli's district. = sleazy. involving unpleasant things such as crime, violence, or immorality (seamy (17-19 centuries), from seam)
morally degraded; "a seedy district"; "the seamy side of life"; "sleazy characters hanging around casinos"; "sleazy storefronts with dirt on the walls"- Seattle Weekly; "the sordid details of his orgies stank under his very nostrils"- James Joyce; "the squalid atmosphere of intrigue and betrayal"
dirt on the walls"- Seattle Weekly; "the sordid details of his orgies stank under his very nostrils"- James Joyce; "the squalid atmosphere of intrigue and betrayal