There are several synonyms for the phrase ''have nightmare.'' These synonyms describe the experience of experiencing unpleasant or terrifying dreams during sleep. One example is the phrase ''have a bad dream,'' which is often used interchangeably with having a nightmare. Another synonym is ''suffer from a nightmare,'' indicating a feeling of helplessness caused by the intensity of the experience. Other related terms include ''night terrors,'' which are intense nightmares typically experienced during early childhood, and ''sleep disturbances,'' which refers to an irregular sleep pattern caused by nightmares and other sleeping disorders. Ultimately, having a nightmare is a common and distressing experience that can happen to anyone, but fortunately, there are various coping mechanisms available to handle the aftermath of this experience.