1. One who is not party to a given transaction; esp., someone other than a party or the party’s employee, agent, tenant, or immediate family member. [Cases: Contracts 185. C.J.S. Contracts §§ 610–612, 619–620.]
2. One not standing toward another in some relation implied in the context; esp., one who is not in privity.
3. A person who voluntarily pays another person’s debt even though the payor cannot be held liable for the debt and the payor’s property is not affected by the creditor’s rights. • Subrogation does not apply to a stranger if the debtor did not agree to or assign subrogation rights.
