Find definitions for court-related terms and phrases here, organized in alphabetical and numerical order. A written declaration upon oath made before an authorized official.An affidavit is a sworn statement a person makes before a notary or officer of the court outside of the court asserting that certain facts are true. An affidavit is a sworn statement of fact that can be used in a variety of legal proceedings, from bankruptcy cases to family and civil litigation matters. Edit, sign, and share Affidavit of Domicile - Middlesex County - co middlesex nj online. Amicus curiae: Latin: "friend of the court. AFFIDAVIT meaning: 1. A written statement that someone makes after promising officially to tell the truth. An…. Ask them to fill out and sign a declaration. On appeal from the Superior Court of New Jersey, Law.