1) Cloistral 2) Conventual 3) Insulated 4) Monastic 5) Monastical 6) Secluded 7) Secluded from the world 8) Sequestered 9) Unworldly Found on https://www.crosswordclues.com/clue/cloistered
Clois'tered adjective 1. Dwelling in cloisters; solitary. ' Cloistered friars and vestal nuns.' Hudibras. « In cloistered state let selfish sages dwell, Proud that their heart is narrow as their cell. Shenstone. » 2. Furnished with cloisters. ... Found on http://www.encyclo.co.uk/webster/C/94