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