Ferocity rhymes with:
generosity, animosity, atrocity, curiosity, generosity, monstrosity, religiosity, velocity, viscosity, analyticity, animosity, atrocity, audacity, biodiversity, capacity, complexity, complicity, curiosity, density, diversity, domesticity, eccentricity, elasticity, electricity, falsity, felicity, generosity, incapacity, intensity, laxity, monstrosity, necessity, obesity, opacity, overcapacity, paucity, perplexity, perversity, publicity, religiosity, simplicity, specificity, toxicity, university, velocity, viscosity, voracity
Ferocity sounds like:
fabricate, fabricated, fairest, fairhurst, farragut, farsighted, farwest, fiercest, fierst, fireside, first, firzite, forced, forecast, forecasted, foreshadow, foreshadowed, foresight, forest, foresta, forested, forged, forget, forgette, forgot, forked, forrest, forseth, forst, forsyth, forsythe, forsythia, fraught, frausto, freaked, frechette, freest, freight, freightway, frescoed, freshest, frigate, fright, frigid, frisked, frist, fristoe, frost, frosted, frosty, fuerst, furst