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