Here's what rhymes with convictiveness.
vindictiveness restrictiveness Words that almost rhyme with convictiveness
fierceness filminess willingness distinctiveness permissiveness siliceous derisiveness iniquitous spirituous submissiveness spiritless descriptiveness griminess jinrickshas jinrikshas ubiquitous litigants implicitness coincidence certificates precipitous explicitness significance duplicitous serendipitous insignificance