null and void

Idioms  

1. Canceled, invalid, as in The lease is now null and void. This phrase is actually redundant, since null means “void,” that is, “ineffective.” It was first recorded in 1669.

---

Example Sentences

Prasad said the agency would no longer rely on certain study results to approve vaccines for pregnant women, saying “prior promises will be null and void.”

From The Wall Street Journal

He also claims that former president Joe Biden’s pardons are null and void because he used an autopen, which is perfectly legal.

From Salon

“That would be the cleanest way of addressing this particular scenario we’re in right now, because all of these new plans that have been drawn would become null and void,” McGhee said.

From Los Angeles Times

“Therefore, any changes made without you agreeing to them are null and void.”

From MarketWatch

Iranian Foreign Minister Abbas Araghchi said in a letter addressed to the United Nations on Saturday that the expiration of the 2015 deal renders the sanctions "null and void".

From Barron's