"Not prayer" can refer to a variety of things depending on the context. In a religious sense, people may use the term "not prayer" to describe actions or behaviors that go against the teachings of their faith or are not considered truly reverent. It's also possible that "not prayer" may refer to words or actions that express the opposite of prayer, such as cursing, disrespect, or indifference. Synonyms for "not prayer" could include blasphemy, sacrilege, profanity, impiety, irreverence, or disrespect. Regardless of the context, using "not prayer" often signifies a departure from respectful and sacred behavior.