1) Declare illegal 2) Do by 3) Handle 4) Outlaw 5) To ban 6) To make a crime 7) To treat as a criminal 8) Treat 9) Treat as a criminal Found on https://www.crosswordclues.com/clue/criminalize
to make punishable as a crime: To reduce the graffiti on subway cars, he wants to criminalize the selling of spray paint to minors. · to make a criminal of: Drug use has criminalized him. Found on https://www.infoplease.com/dictionary/criminalize