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