[f. ASSURE v. + -ING1.] The action of the vb. ASSURE; making sure, assurance. In obs. sense: Betrothal.
1530. Palsgr., 195/2. Assuryng, assurement.
1579. Lyly, Euphues (Arb.), 84. That a maryage should be solemnised, where never was any mention of assuring.
1655. Gurnall, Chr. in Arm., III. (1669), 341/1. The promise is an Assuring-office to secure him his adventure.
a. 1866. J. Grote, Exam. Util. Philos., iii. 51. Such assurings do not produce as much effect as we should expect.