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