An Applicant Affidavit is a legal form used to provide additional information regarding crimes, negative actions, and applicant selfdisclosures. An affidavit is a legal document that takes the place of oral testimony in legal proceedings.An affidavit is a written statement made under oath that is typically used in legal proceedings. Learn their purpose, when to use, and how to write. Com online Real Life Dictionary of the Law. It is the main way you present evidence (the facts of the case) to a court. Witness 1 is the only person who saw the car. Witness 1 declines to fill out a Smith Affidavit. To ask the Court to appoint a lawyer, please fill out the Motion for Appointment of. Counsel form and the Financial Affidavit.