Here's what rhymes with niccness.
Words that almost rhyme with niccness
illness thickness sickness richness business minutes witness fitness mistress viscous isthmus quickness bigness dimness discus nimbus instance impulse vicious influx stiffness stillness tickets biscuits citrus fearless eyewitness listless meniscus pickets swiftness thickets ingots ingress sinless sinuous unfitness beardless cirrus pickups villus wickets windlass windless witless distance interests limits bishops infants visits ambitious forgiveness digits malicious pernicious hindrance assiduous grimace litmus rivets strictness trinkets billets crickets hillocks instants officious pittance pivots bigots hibiscus riddance snippets wingless religious appearance assistance spirits clearance insistence delicious inhibits judicious admittance auspicious bacillus brilliance pigments distinctness elicits frigates nutritious papyrus seditious avaricious indigence remittance resistless triplets litigious mastitis existence resistance adherence assistants exhibits persistence suspicious coherence fictitious prodigious shipments capricious delinquents diffidence propitious consistence cystitis factitious injudicious irreligious agribusiness endearments profitless solicits unambitious interference commitments subsistence adherents prestigious prohibits adventitious archbishops contingents reappearance reminiscence eucalyptus incoherence repetitious surreptitious enlistments nonreligious coefficients disappearance perseverance superstitious coexistence expeditious infringements nonexistence transmittance