Here's what rhymes with unspecifiable.
viable liable justifiable pliable verifiable certifiable reliable identifiable classifiable unidentifiable unverifiable notifiable deniable rectifiable unreliable undeniable unjustifiable Words that almost rhyme with unspecifiable
parietal sizable sizeable survivable advisable assignable likable likeable risible liveable desirable definable excitable maniacal ascribable decidable unlikeable unliveable undesirable ammoniacal inadvisable libidinal realizable describable reconcilable undefinable analyzable recyclable climbable recognizable irreconcilable indefinable cognizable demoniacal indictable indescribable unrecognizable nonassignable monomaniacal