Shut-in in a sentence as a noun

Not because more men were shut-in nerds ostracized by society who were hungry for something interesting to work on.

Shut-in in a sentence as an adjective

Something I find interesting that I don't see immediately mentioned in the comments is what a "shut-in" or "hermit" really means when you have the internet.

Shut-in definitions

noun

someone who is incapacitated by a chronic illness or injury

See also: invalid

adjective

somewhat introverted

See also: introvertish

adjective

confined usually by illness

See also: homebound housebound