A2 not anything: There was nothing in her suitcase. He said he did nothing wrong.
B1 not something important or valuable: She was crying about nothing.
for nothing › without a successful result: I came all this way for nothing.
have nothing to do with someone/something › to not involve or affect someone or something: He made his own decision – I had nothing to do with it. I wish he wouldn’t give advice on my marriage – it has nothing to do with him (= he should not interfere).