agoraphobe

/əˈɡɔrəˌfoʊb/
noun
  1. A person who suffers from agoraphobia, a fear of being in open or crowded places where escape might be difficult.
    • The support group helps agoraphobes gradually become comfortable in public spaces.
    • As an agoraphobe, she rarely leaves her house except for necessary appointments.
    • He is an agoraphobe and prefers to order groceries online rather than go to the supermarket.