Under bond refers to the legal requirement of a person or company to provide a guarantee in the form of a bond. Synonyms for this term include bonded, secured, or bonded and insured. These terms are often used in the context of a contract or agreement, where one party may require the other to provide a bond or other security to ensure performance or payment. Other related terms include surety, guarantee, or indemnity, which all refer to some form of financial protection or assurance. Understanding these terms and their synonyms is crucial for anyone who is involved in legal or financial contracts, as they can have serious implications for both parties if not properly understood or executed.