There are several antonyms for the word "legalizations." Some opposite words include prohibition, restriction, ban, criminalization, and discouragement. Prohibition refers to the act of forbidding something by law, while restriction implies setting limits or rules. Meanwhile, a ban denotes a formal or official prohibition or interdiction. Criminalization is the opposite of legalization, which refers to the act of making something illegal or punishable by law. Lastly, discouragement is the act of preventing or dissuading something from happening. In general, these antonyms convey the opposite meanings of legalizations, which means allowing or authorizing something by law.