What is the French word for very cool?

There isn't a single perfect translation for "very cool" in French, as the meaning can be nuanced depending on context. Here are a few options:

For a general sense of "cool" or "awesome":

* Génial: This is the most common and versatile option. It conveys a sense of enthusiasm and excitement.

* Super: This is another versatile option, similar to "awesome" or "great".

* Sympa: This means "nice" or "friendly", but can also be used to express approval of something cool or trendy.

For something more specific:

* Trop cool: This literally means "too cool" and is used to emphasize the coolness of something.

* Classe: This means "stylish" or "classy" and can be used to describe something cool or fashionable.

* Branché: This means "connected" or "hip" and can be used to describe someone or something that is trendy and in the know.

The best translation will depend on the specific context and the nuance you want to convey.