Here's what rhymes with imperfectiveness.
effectiveness ineffectiveness defectiveness protectiveness objectiveness Words that almost rhyme with imperfectiveness
perceptiveness festiveness attentiveness possessiveness offensiveness restiveness deceptiveness inventiveness connectedness defensiveness receptiveness inattentiveness pensiveness obsessiveness inoffensiveness aggressiveness impressiveness suggestiveness tenseness oppressiveness denseness retentiveness scarceness reticence extensiveness headmistress progressiveness unexpectedness apprehensiveness celibates collectivists contentedness disconnectedness expensiveness hesitance intensiveness fetishists inexpensiveness caribous residence comprehensiveness penitence expressiveness repressiveness residents embellishments counterintelligence