demophobe
/dɪˈmɒfəbiː/ DĪ-mŌ-fə-BEE
Definitions
1. noun
A person who has an excessive or irrational fear of crowds or public places.
“The demophobe’s anxiety increased as the concert venue filled with people.”
2. noun
A person who has a general fear or dislike of crowds or public places, not necessarily to an irrational degree.
“The demophobe preferred to avoid busy streets and shopping malls.”