Here's what rhymes with halfludicrous.
ludicrous Words that almost rhyme with halfludicrous
luminous ruinous uveitis humanness humanise ruefulness usefulness voluminous luminance fruitfulness ruthlessness uselessness youthfulness rootlessness fruitlessness gruesomeness spookiness kookiness scrupulous humanists lubricants truthfulness albuminous cumulus mutinous ruminants glutinous fumigants tunefulness dehumanise glutenous humourlessness gratuitous bituminous duelists illusionists lutenists unscrupulous communicants contumacious untruthfulness pugilists nutriments