a.
1.
Belonging to or characteristic of the subject ( as contrasted with the object ), in the mind, within the self.
2.
Merely mental, limited to the subject, in the mind only, unreal, non-objective, not actual, internal, non-external.
3.
Imagined, fancied, imaginary, illusory.
4.
Introversive, introspective, contemplative, inward-looking, dealing with one's own feelings, colored by one's own states.