Definition of surety

• n. - The state of being sure; certainty; security.
• n. - That which makes sure; that which confirms; ground of confidence or security.
• n. - Security against loss or damage; security for payment, or for the performance of some act.
• n. - One who is bound with and for another who is primarily liable, and who is called the principal; one who engages to answer for another's appearance in court, or for his payment of a debt, or for performance of some act; a bondsman; a bail.
• n. - Hence, a substitute; a hostage.
• n. - Evidence; confirmation; warrant.
• v. t. - To act as surety for.