Tempestuous rhymes with:
contemptuous, tumultuous, virtuous, ambiguous, arduous, conspicuous, contemptuous, contiguous, continuous, deciduous, disingenuous, incongruous, ingenuous, innocuous, strenuous, tumultuous, vacuous, virtuous
contemptuous, tumultuous, virtuous, ambiguous, arduous, conspicuous, contemptuous, contiguous, continuous, deciduous, disingenuous, incongruous, ingenuous, innocuous, strenuous, tumultuous, vacuous, virtuous