1642. Quarles, Observ. Princes & States, lxxvi. It is the height of a provident Commander to keepe his owne designes undiscoverable to the Enemy.
1688. Boyle, Final Causes Nat. Things, II. 79. Among the ends of God, which he thought undiscoverable by us.
176874. Tucker, Lt. Nat. (1834), II. 79. The multitude of events produced by the concurrence of undiscoverable causes.
1841. Myers, Cath. Th., IV. § 36. What portion of such Plan it is, is at present undiscoverable by us.
1885. Law Times, 11 April, 420/2. The undiscoverable flaw constituted a breach of such warranty.
Hence Undiscoverableness.
1656. Jeanes, Fuln. Chr., 383. His riches are said to be unsearchable, which Epithet denoteth the undiscoverablenesse of them by the light of nature.