1526. Pilgr. Perf. (W. de W., 1531), 241. The vnsuperable loue & goodnes of god.
1617. Minsheu, s.v. (hence in Sherwood).
1644. Digby, Nat. Bodies, i. § 4. 3. It … is the occasion of exceeding great errours, and entangleth one in vnsuperable difficulties.
1777. Potter, Æschylus, Agamemnon, 293. To wear The form of friendship, and with circling wiles Inclose him in th’ unsuperable net.
