WARNING TO BOTH PARTIES: This Affidavit is an important document. You must fill out this Affidavit completely, and provide accurate information.I'm going to be walking through the steps of what an off-date financial information is and how to properly fill out this form. It comes from a past tense form of the Latin verb affidare, meaning "to pledge"; in Latin, affidavit translates to "he or she has made a pledge. Ballot Instructions indicate how to complete the ballot along with other. Affiant - A person who has made an affidavit. Affidavit - A written declaration under oath. Affidavit definition: . See examples of AFFIDAVIT used in a sentence. Complete this form for each Maricopa college that you plan to attend each semester. b.