words ending in aciousnes

3 Syllables: graciousnes, spaciousnes
4 Syllables: audaciousnes, capaciousnes, edaciousnes, fugaciousnes, loquaciousnes, mendaciousnes, minaciousnes, pugnaciousnes, rapaciousnes, sagaciousnes, salaciousnes, sequaciousnes, tenaciousnes, ungraciousnes, veraciousnes, vivaciousnes, voraciousnes
5 Syllables: contumaciousnes, incapaciousnes, perspicacioushis, perspicaciousnes, pertinaciousnes, testaceousnes, vexatiousnes
6 Syllables: disputatiousnes, saponaceousnes

Now you can make multisyllabic rhymes in the new rhymit app :)