Here's what rhymes with nonpensionable.
pensionable unmentionable Words that almost rhyme with nonpensionable
objectionable impressionable unobjectionable penetrable intelligible negligible questionable impenetrable unquestionable reputable heritable unexceptionable revocable exceptionable predicable inevitable creditable demonstrable unintelligible irrevocable inequitable pestilential inheritable disreputable discreditable