Here's what rhymes with opust.
                        
                        
                    
                                Words that almost rhyme with opust
noticed  potest  immodest  remotest  chiropodist  focused  lowest  oldest  focussed  knowest  locust  moment  poet  closest  coldest  grossest  posttest  slowest  doughnut  donut  docent  drollest  violist  poulticed  hostessed  pronest  opponent  potent  quotient  cogent  rodent  elopement  folklorist  unfocused  refocused  unfocussed  wholesomest  refocussed  atonement  deponent  component  enrollment  enrolment  proponent  honeylocust  encroachment  enthronement  dethronement  engrossment  cosmogonist  postponement  emblazonment