The phrase "miaow miaow" is often used to describe the sound that a cat makes, but there are many other synonyms that can be used to convey the same meaning. Some of the most common synonyms for "miaow miaow" include meow, purr, yowl, caterwaul, and hiss. Other related words might include growl, howl, or even snarl, depending on the context and the tone of the sound. Ultimately, the choice of synonym will depend on the specific situation and the exact sound that the cat is making, but there are plenty of options to choose from.