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