The term "utmost good faith" in insurance means that both the insured and insurer are required to disclose all material facts and information relevant to the insurance policy before the contract is formed. This principle ensures that both parties enter into the contract with a full understanding of the risks involved, and that there is no intentional or unintentional misrepresentation or fraud. The duty of utmost good faith applies throughout the life of the policy, which means that both parties must continue to disclose any material changes that occur during the policy period.