unexˈcusing,ppl.a. (un-1 10.) 1853Ruskin Stones Ven. II. 199 Scripture History..sets down with unmoved and unexcusing resoluteness the virtues and errors of all men of whom it speaks.1858Miss Mulock Th. ab. Wom. 275 With a resolute, uncompromising, unexcusing veracity.