There are many synonyms for the phrase "has a nightmare". Some of these include: suffers a bad dream, experiences a night terror, has a frightful dream, undergoes a terrifying nightmare, has a haunting dream, and endures a disturbing sleep. Nightmares are a common experience for many people, and finding language to describe them can be helpful in understanding and managing them. Whether it's a one-time occurrence or a recurring problem, speaking with a therapist or looking for self-help resources can be a useful step in addressing and coping with nightmares.