cloistered

Short definition from Wiktionary

Adjective

1. 1
   Dwelling or raised in, or as if in, cloisters; solitary.
2. 2
   Isolated, protected, hidden away for the sake of maintaining innocence.
3. 3
   Naive, lacking in worldliness.
4. 4
   Furnished with cloisters.

Verb

1. 1
   simple past and past participle of cloister