x-rated \ˈ ̷ ̷ ˌ ̷ ̷ ̷ ̷ \adjective Usage: usually capitalized X 1. a.: x herein b.: of, relating to, or showing X-rated motion pictures < an X-rated theater > 2. a.: relating to or characterized by explicit sexual material or activity < an X-rated book > b.: obscene < an X-rated gesture >