Near Rhymes:
* Tornado: This is the closest rhyming word, but it's essentially the same thing.
* Avocado: A bit of a stretch, but works if you're going for a humorous or whimsical tone.
* Cascaded: Not a perfect rhyme, but shares a similar sound and imagery.
Eye Rhymes:
* Cannonade: These words don't rhyme phonetically, but look like they should on paper.
Other Considerations:
* Rhyming with "nado" part: You could rhyme with words like "rado," "vado," or "lado," but these are mostly invented words and don't have much meaning.
Ultimately, the best rhyme for "gustnado" depends on the context of your use. If you need a perfect rhyme, you may have to use a synonym like "tornado" or settle for a near rhyme.