Here's what rhymes with infectiousness.
Words that almost rhyme with infectiousness
fecklessness recklessness carelessness helplessness preciousness senselessness impetuousness tendentiousness mechanise incestuousness fetidness heftiness genesis stenosis gentleness restlessness sensuous tetanus licentiousness venomous helpfulness breathlessness sedulous contentiousness directionless momentousness testiness levelness tempestuousness tepidness zestfulness dextrousness inheritance resonance feminists perilous decadence mellitus membranous tenuous blessedness nebulous requisites conscientiousness garrulous pendulous carefulness emeritus baronets fretfulness healthfulness pretentiousness perfectionists restfulness defencelessness defenselessness terribleness eventfulness sensibleness djellabas marabous jellabas intelligence sentiments relevance specialists sediments pestilence precipice asparagus credulous incredulous tremulous pleasantness querulous clarinets overemphasis petulance celebrants interrogates decadents megabits relentlessness dreadfulness respectfulness contemptuousness decimates portentousness redolence resentfulness secondments nonvenomous housemistress neglectfulness settlements negligence prevalence regiments precedence forgetfulness impediments pathogenesis tenements beneficence embarrassments preeminence preparedness unpleasantness irrelevance malevolence morphogenesis registrants testaments detriments experiments benevolence precedents prerequisites temperaments angiogenesis geneticists integuments unpreparedness disinheritance nonspecialists developments hydrocephalus embryogenesis nonresidents presentiments spermatogenesis gluconeogenesis redevelopments