nothing
pronounNo thing; not anything.
pronounNo part; no portion.
pronounOne of no consequence, significance, or interest.
nounSomething that has no existence.
nounSomething that has no quantitative value; zero.
nounOne that has no substance or importance; a nonentity.
adjectiveInsignificant or worthless.
adverbIn no way or degree; not at all.
idiom(for nothing) Free of charge.
idiom(for nothing) To no avail.