Here's what rhymes with retumable.
                        
                        
                    
                                assumable  presumable  consumable  Words that almost rhyme with retumable
dutiable  doable  suitable  juvenile  movable  immovable  usable  moveable  reducible  removable  deducible  inducible  luminal  provable  beautiful  usual  crucible  immutable  irreducible  renewable  fusible  mutable  reusable  producible  improvable  mutual  unsuitable  cuticle  delusional  unusable  disputable  irremovable  refutable  unmovable  unmoveable  disprovable  unusual  attitudinal  inscrutable  reproducible  excusable  irrefutable  latitudinal  commutable  institutional  longitudinal  indisputable  nonrenewable  manoeuvrable  construable  executable  inexcusable  constitutional  distributional  unconstitutional