A written, printed, or videotaped declaration or statement of facts, made voluntarily, and confirmed by the oath or affirmation of the party making it, taken before an officer having authority to administer such oath.
A written statement of facts signed under penalty of perjury, often before a court clerk or notary public who administers the oath to the signing party, who is called the affiant or declarant. Affidavits are routinely required for the procurement of warrants and are used in some jurisdictions to initiate juvenile court proceedings. They may be admitted into evidence.
A written or printed declaration or statement of facts made voluntarily, and confirmed by oath, without notice to the adverse party and without opportunity to cross-examine. Affidavits are usually attached to field notes in support of corner restorations.