Afairophobia Fear of the abstract plane of existence.
Agnostophobia Fear of the unknown.
Dianoiphobia Fear of the mental plane of existence.
Funfebophobia Fear of the physical plane, spiritual plane, mental plane, emotional plane, and abstract plane of existence.
Fysikophobia Fear of the physical plane of existence.
Philosophobia Fear of philosophy.
Synaiphobia Fear of the emotional plane of existence.