186, 5 N. W. 459. (In insurance.) A fact which increases the risk, or which, if disclosed, would have been a fair reason for demanding a higher premium; any fact the knowledge or ignorance of which would naturally influence the insurer in making or refusing the contract, or in estimating the degree and character of the risk, or in fixing the rate. Boggs v. Insurance Co., 30 Mo. 68; Clark v. Insurance Co., N. H. 338, 77 Am.