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