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