The antonyms for non-sacred can be numerous, and they all would depend on the context in which they are used. However, some of the antonyms for non-sacred could be "sacred", "holy", "sanctified", "consecrated", "revered", "divine," etc. The term "sacred" relates to anything that is considered holy, blessed, or consecrated in some way. On the other hand, the term "non-sacred" depicts anything which is ordinary, secular, or profane. Non-sacred things have no religious or spiritual significance and are considered to be mundane. Therefore, the antonyms for non-sacred would include any term that implies the opposite of these qualities.