1. Used to express disagreement, denial, or refusal regarding something previously mentioned or suggested
He said I should quit my job, but I'll have nothing of it.
Ele disse que eu deveria deixar meu emprego, mas não aceito nada disso.
2. A categorical rejection of an idea, proposal, or statement
Nothing of it! I refuse to accept these terms.
Nada disso! Recuso aceitar estes termos.