Criminalized means to make something illegal or punishable by law. Some synonyms for criminalized include banned, forbidden, proscribed, outlawed, prohibited, and illegalized. These words all convey the idea of a particular activity or behavior being made unlawful and subject to penalties if violated. They may be used in different contexts to describe actions such as drug use, gambling, or certain types of speech. Whatever the context, a word that describes something as criminalized implies that it has been deemed a threat to society or the common good, and that it must be discouraged or eradicated through legal means.