Here's what rhymes with ferrugenous.
                        
                        
                    
                                Words that almost rhyme with ferrugenous
chumminess  suddenness  gluttonous  cussedness  crumminess  covenants  sustenance  subtilis  humbleness  suffocates  subtenants  sultriness  gutlessness  drunkenness  voluptuous  succulence  bloodlessness  bumptiousness  colourlessness  colourfulness  supplicants  truculence  trustfulness  succulents  sumptuousness  accompanists  supplements  presumptuous  penultimates  obstructionists  presumptuousness  rambunctiousness  constructionists  deconstructionists