[f. prec.] The quality of being unsubstantial; insubstantiality.
1838. A. Clissold, Pract. Nature, 182. If we allow this doctrine of unsubstantiality to prevail.
1847. C. Brontë, J. Eyre, xxiv. Something of unsubstantiality and uncertainty had beset my hopes.
1860. [see prec.].
1883. Fortn. Rev., April, 565. I have no consciousness of what happened, after this feeling of unsubstantiality came upon me.