Here's what rhymes with immassive.
                        
                        
                    
                                Words that almost rhyme with immassive
bosses  tosses  embosses  crosses  washes  glosses  ravish  gravis  garages  barrages  crawfish  massages  quashes  uncrosses  collages  squashes  recrosses  probosces  kamikazes  anastomosis  albatrosses  mackintoshes  macintoshes  exhaustive  responsive  abortive  adoptive  sportive  supportive  absorptive  unresponsive