Here's what rhymes with conissance.
recognisance Words that almost rhyme with conissance
cognisance goriness haughtiness soreness oxidants naughtiness garnishments overconfidence exorbitance mawkishness balminess hawkishness carsickness suaveness acknowledgments heartedness acknowledgements snobbishness admonishments morbidness subcontinents waspishness accomplishments inconspicuous intoxicants exhaustiveness heartsickness responsiveness bigheartedness kindheartedness downheartedness unresponsiveness hardheartedness warmheartedness tenderheartedness