For "fast" in the sense of speed:
* Rapide (pronounced "ra-peed") - This is the most common and straightforward word for "fast".
* Vite (pronounced "veet") - This is an adverb meaning "quickly" and is often used to emphasize speed.
* Fringante (pronounced "frin-gant") - This word literally means "spirited" or "lively" and can be used to describe someone who is quick and energetic.
For "feminine" in a way that emphasizes speed or energy:
* Énergique (pronounced "eh-nair-zhee-k") - This means "energetic" and can be used to describe a woman who is full of life and moves quickly.
* Dynamique (pronounced "dee-na-meek") - This means "dynamic" and can be used to describe a woman who is active, forceful, and moves with purpose.
Combining "fast" and "feminine":
* Fringante et féminine - This phrase directly translates to "spirited and feminine".
* Rapide et élégante (pronounced "ra-peed eh eh-leh-gant") - This translates to "fast and elegant".
Ultimately, the best word or phrase to use will depend on the context and the specific meaning you want to convey.