Forbiddances, or prohibitions, refer to things that are not allowed or are considered taboo. There are several synonyms for this word, including bans, restrictions, taboos, interdictions, and vetoes. Bans are formal or official prohibitions that may be enforced by law. Restrictions are limitations on something that may be considered dangerous or harmful. Taboos are cultural or religious prohibitions that are generally seen as sacred. Interdictions are formal prohibitions that may be imposed by an authority figure. Vetoes are rejections or refusals to allow something to happen. Whatever the synonym, forbiddances are a way of establishing boundaries and setting expectations for what is acceptable behavior or activity.