a. 1470. Dives & Pauper (W. de W., 1496), VI. x. 247/2. Eue synned more by freelte and unstabylyte … than by shrewednes.
1572. Wills & Inv. N. C. (Surtees, 1835), 386. Perceivynge … the vnstabilitie and soden changes of the worlde,… and the vncertentye of deathe.
1603. Knolles, Hist. Turks (1621), 50. The head was forthwith strucke off from this miserable carkasse (the mirrour of honours vnstabilitie).
1646. P. Bulkeley, Gospel Covt., V. 363. When you see uncertainty and unstability of all things.
1886. Science, 5 Nov., 401/2. The unstability of such an association is … beginning to be understood.
