[f. as prec. + -NESS.] The quality or state of being anonymous; anonymity.
1802. Southey, in Robberds, Mem. W. Taylor, I. 426. I, with all proper anonymousness, am printing an abridged ‘Amadis.’
1859. Mill, Dissert., I. Pref. Writings put forth under the screen of anonymousness.
