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