Here's what rhymes with captiousness.
Words that almost rhyme with captiousness
callousness anxiousness haplessness classlessness fractiousness rapidness vapidness cabinets annulus randomness cannabis gangrenous handedness ravenous abacus applets assonance bashfulness tactlessness laminas clamminess thanklessness tacitness validness analysis paralysis calculus dialysis abstinence scandalous thalamus animates thankfulness amulets cancellous fatuous laminates randomised salicylates chaplets gravitas handsomeness madrasas tactfulness randomise acclimates assonants tangibleness fallibleness advocates analogous graduates activists analysts miraculous ambulance catalysts fabulous gelatinous alchemists calamitous maximus cantonments adjutants annalists catapults maximised oleaginous parabolas abrogates animists highhandedness maleficence anatomised anatomise offhandedness taskmistress accidents capacitance unanimous sacraments blasphemous magnanimous encapsulates flatulence coagulants ambassadress annulments metabolise antagonists psychoanalysis contaminants battlements recalcitrance romanticists semanticists cohabitants flagellants openhandedness underhandedness inhabitants extravagance protagonists hemodialysis psychoanalysts philatelists undergraduates entanglements intransigence pusillanimous postgraduates anticoagulants televangelists intransigents