Uncontrollable rhymes with:
controllable, controllable, controllable, controllable, controllable, consolable, controllable, appealable, available, billable, callable, consolable, controllable, fallible, gullible, incalculable, infallible, inhalable, inviolable, irreconcilable, noncallable, recyclable, resealable, salable, saleable, syllable, unassailable, unavailable, unsalable, unsaleable, valable, violable