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