Seperated to together

insularity
(n)
in-syoo-LAIR-i-tee
Meaning

isolation; separateness

1st Sample Sentence

1. The insularity of both Britain and Japan have historically served to protect these island nations from foreign invasion.

2nd Meaning

2. narrow-mindedness; lack of experience with the wider world

2nd Sample Sentence

2. When I first arrived at the university from my village, I soon became ashamed of the insularity of my outlook.

Root

insula (island) (Latin)

Mnemonics

Insularity sounds like insulator, and we insulate (seperate) electric wires from other things.