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