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