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