insular = In Cellar...so u isolate
Insularity sounds like insulation. So narrow minded people are insulated i.e isolated from new thinking.
Insularity-Insult-when u get insulted in your friends group,u get detached from that group
Insularity sounds like insulted the narrow-minded people
jin logo ne jesus ko SULI par chadaya vo.narrow minded the bcoz they didn't get his ideas.