The phrase "seedy underworld" refers to a hidden and often criminal or shady part of society. It represents a dark and questionable place where illegal activities or immoral behavior take place. Full definition
So, before you can say «heel toe heel toe», he's signing up for a ballroom class and allowing slightly - aloof teacher Paulina (Jennifer Lopez) to lead him into a not - very - seedy underworld of sequins, large hair and frighteningly white teeth. (movie-gazette.com)
On the surface, Pusher bears all the superficial earmarks you'd expect from a self - consciously hip young filmmaker, lifting its vividly seedy underworld from Mean Streets, its heroin - fueled mayhem from Trainspotting, and plenty of other passages from the Book Of Tarantino. (film.avclub.com)
The critically acclaimed blockbuster Grand Theft Auto III comes to mobile devices, bringing to live the dark and seedy underworld of Liberty City. (gamepur.com)