definition of Affiant
Affiant Law & Legal Definition. An affiant is a person who swears to the truth of statements made in an affidavit. An affidavit is statement of facts which is sworn to (or affirmed) before an officer who has authority to administer an oath (e.g. a notary public).ffiant Law & Legal Definition. An affiant is a person who swears to the truth of statements made in an affidavit. An affidavit is statement of facts which is sworn to (or affirmed) before an officer who has authority to administer an oath (e.g. a notary public).