How to spell SWEISHY correctly?

If you meant to spell "swishy", it could refer to something that moves swiftly and smoothly or you could mean "swish" as in a sudden movement or sound. If you meant "squishy", it could refer to something soft and pliable or "squish" as in a sound or feeling of something being compressed. If neither of these were your intended word, please provide more context for a proper suggestion.