What does nullifying?

Answer 1

To nullify means to render ineffective. If you nullify a contract. a warranty, or even a marriage, the effect is as if the thing had never happened. In law ( which is sometimes redundant ) things are sometimes said to be "null and void" - that is, "nothing and nothing." Another example of legal redundancy is the term "cease and desist" which literally means: "stop and stop." ... goes back to the olden days, when lawyers were paid by the word, I guess.