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