CLOISTERING is a playable word

cloister Scrabble® Dictionary

verb
cloistered, cloistering, cloisters
to seclude
1115 Playable Words can be made from "CLOISTERING"
   2-Letter Words (25 found)
   3-Letter Words (102 found)
   10-Letter Words (2 found)
   11-Letter Words (1 found)