a. (UN-1 7 b.)
Also, in recent use, unforeseeableness, -ably.
1672. South, Serm. (1717), V. 300. By such unlikely and unforeseeable Ways does Providence sometimes bring about its great Designs.
180212. Bentham, Ration. Judic. Evid. (1827), I. 205. The suddenly put and unforeseeable question.
1877. Morley, Crit. Misc., Ser. II. 377. The source of continual and unforeseeable improvements.