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