incredulously,adv.|ɪnˈkrɛdjʊləslɪ| [f.prec. + -ly2.] In an incredulous manner; with incredulity. 1800E. Hervey Mourtray Fam. IV. 199 She shook her head, incredulously.1863M. E. Braddon Eleanor's Vict. I. i. 9 The Englishman looked almost incredulously at his animated companion.