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