pronoun.
Not any thing; no thing.
pronoun.
An absence of anything, including empty space, brightness, darkness, matter, or a vacuum.
pronoun.
Anything
noun.
Something trifling, or of no consequence or importance
noun.
A trivial remark (especially in the term sweet nothings)
noun.
A nobody (insignificant person)
adverb.
Not at all; in no way.