'introvertish shut-in' definitions:

Definition of 'introvertish shut-in'

From: GCIDE

introversive \introversive\ adj. (Psychol.) directed inward; marked by interest in oneself or concerned with inner feelings. Contrasted with extroversive. [Narrower terms: introvert, introverted, introvertive; {introvertish, shut-in ]. Antonym: ambiversive. Also See: unsociable. [WordNet 1.5]