Fallaciously rhymes with:
hellaciously, graciously, hellaciously, ostentatiously, tenaciously, ambitiously, anxiously, cautiously, consciously, expeditiously, facetiously, graciously, hellaciously, ostentatiously, subconsciously, surreptitiously, suspiciously, tenaciously, unconsciously, viciously
Fallaciously sounds like:
fabulously, falsely, felkel, flagella, flawlessly, fleagle, flegal, flegel, fliegel, fluegel, follicle, foolishly