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