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