affiant

You should start by stating the name of the person giving the testimony, called the “affiant.”

The witness giving the affidavit is the “affiant.”

“This raises serious questions about how the affiant characterized his or her assertion of probable cause and the justification for seizing thousands of personal and private items,” Mr. Trump’s lawyers wrote.

"Having carefully reviewed the Affidavit before signing the Warrant, I was — and am — satisfied that the facts sworn by the affiant are reliable," the judge wrote.

"Your affiant believes any minimally protective mother would have immediately cut off Staley’s access to her son after receiving those Facebook messages," detectives wrote in the arrest affidavit.