Unexceptional. Idle basically means still or lazy so you would want an antonym to noteworthy, such as unexceptional. Hope this helped.
-Parentheses are used to set off a participle word or words which can be omitted, but does not affect the whole thought of the sentence. In addition, parentheses could also be used to add a specific detail about the word beside it.
-Dashes are used to set additional information off. Dashes are commonly used if the words it enclosed already has a comma or commas in it, just to avoid confusion.
Yes your sentence is correct but you have add "in" in place of within
A sense of life is a pre-conceptual equivalent of metaphysics an emotional, happy, etc.
