"With few supplies and limited food, John found the wilderness a bit intimidating."
The botanical garden has turned into a wilderness.
They enjoyed camping in the wilderness.
To go camping out in the wilderness, you have to know the basic survival skills.
I hope that I can survive the vetting process. This program will show various ways for a person to survive in the wilderness.
Yes, "American wilderness" should be capitalized because it is a proper noun referring to a specific geographic area. However, "wilderness" in general would not be capitalized unless it is the first word in a sentence. So it would be "American wilderness," but "But how about wilderness."
I am not writing a sentence using that word.
living in the wilderness is a good place to be to avoid cosmopolitan.
I look forward to our next foray into the wilderness.
a sentence using the word endotracheal
This is a sentence using the word aviator.
The settlers charged across the plains, despite the blizzard that threatened them.
this is a sentence using the word armchair.