Here's what rhymes with undefensible.
                        
                        
                    
                                sensible  defensible  insensible  indefensible  dispensable  indispensable  ostensible  extensible  comprehensible  reprehensible  Words that almost rhyme with undefensible
flexible  vegetable  sensual  dependable  sentinel  tenable  preventable  undependable  spendable  preventible  unpreventable  bendable  terrible  accessible  cerebral  festival  amenable  decimal  parable  perceptible  detectable  inflexible  sceptical  seminal  detestable  illegible  ineffable  legible  bearable  delectable  execrable  expendable  presentable  testable  undetectable  inedible  tentacle  wearable  amendable  extendable  perfectible  pentacle  weldable  detectible  electable  quenchable  medical  chemical  acceptable  dimensional  perceptual  respectable  spectacle  susceptible  credible  inaccessible  plentiful  retinal  sectional  skeptical  textual  unacceptable  commendable  lamentable  segmental  untenable  impeccable  compressible  digestible  expressible  unquenchable  caramel  correctable  impressible  repairable  breathable  stretchable  suppressible  spreadable  professional  clerical  exceptional  incredible  intestinal  intentional  pedestal  receptacle  unbearable  attentional  impregnable  irrepressible  polemical  regrettable  trigeminal  unforgettable  chimerical  extensional  indigestible  obsessional  unprofessional  processional  prophetical  collectible  insusceptible  suggestible  collectable  forgettable  recessional  perceptional  comestible  connectable  unwearable  connectible  conventional  numerical  hypothetical  biochemical  confessional  directional  unconventional  correctional  inexpressible  unintentional  alchemical  geochemical  incompressible  inflectional  intertextual  intracerebral  anticlerical  concessional  contestable  nonprofessional  unexceptional  inflexional  premedical  recommendable  congressional  contemptible  bidirectional  histochemical  incontestable  photochemical  twodimensional  paramedical  conceptional  convectional  subprofessional  nonclerical  nonnumerical  noncollectable  heterosexual  homosexual  multidimensional  physicochemical  psychosexual  threedimensional  semiprofessional  complexional  gastrointestinal  unidirectional  paraprofessional  alphanumerical  immunohistochemical