Here's why and how you'd express it:
* "Sixy" isn't a word in English or French. It's a playful or informal way of saying "sexy."
* "Six" in French is "six."
* You can't combine "six" and "sexy" directly in French.
If you want to convey a similar meaning, you might use:
* "Très sexy" (very sexy)
* "Super sexy" (super sexy)
* "Extrêmement sexy" (extremely sexy)
Context is important: Depending on the situation, a more literal translation might be suitable. For example, you could say:
* "Six, six" (literally "six, six") if you're referring to the number six twice.
Remember, there are often multiple ways to express a concept in another language. Choose the option that best suits the context and your desired meaning.