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