Guarantor A person who guarantees to pay for someone else's debt if he or she should default on a loan obligation. Investopedia Says: Usually, people with poor credit can only get a loan if they have a guarantor. Related Terms: Credit Rating Creditor Default Demand Guarantee Impaired Credit Loan Proof Of Funds - POF Signature Guarantee Surety Uniform Rules For Demand Guarantees - URDG |