Declarant is a legal term commonly used in declaration documents and affidavits. It refers to an individual who makes a statement under oath or affirmation. Some commonly used synonyms for declarant include affiant, deponent, witness, attestant, and affirmant. These terms are used interchangeably in legal documents and refer to the same role. Affidavit and declaration are also used as synonyms for each other. In essence, the term declarant simply refers to an individual who has made a sworn statement on a particular matter. Regardless of the term used, the declarant is obligated to tell the truth and can be held liable for any false statements made.