material fact

the Government has failed to show by 'clear, unequivocal, and convincing' evidence either (1) that facts were suppressed which, if known, would have warranted denial of citizenship or (2) that their disclosure might have been useful in an investigation possibly leading to the discovery of other facts warranting denial of citizenship

Material facts are those which relate to the merits of the cause of action or defense — facts which are within the issues to be tried and which may be made available on the trial as completing the cause of action or defense. 54 111, App. 353.

(In contracts.) One which constitutes substantially the consideration of the contract, or without which it would not have been made. Lyons v. Stephens, 45 Ga. 143. (In pleading and practice.) One which is essential to the case, defense, application, etc., and without which it could not be supported. Adams v. Way, 32 Conn. 16S; Sandheger v. Hosey, 26 W. Va. 223; Davidson v. Hackett, 49 Wis. 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 nafurally 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.. 40 N. H. 338, 77 Am. Dec. 721; Murphy v. Insurance Co., 205 Pa. 444, 55 Atl. 19; Penn Mut. L. Ins. Co. v. Mechanics' Sav. Bank, 72 Fed. 413, 19 C. C. A. 286, 38 In R, A. 33.

Defined under Fact in Black's Law Dictionary.