What is the noun for happily happy.?

There isn't a single noun that perfectly captures the idea of "happily happy." It's a bit of a redundant phrase, since "happy" already conveys the feeling of joy and contentment.

Here are some options depending on the context you're using it in:

* Bliss: This word suggests a state of extreme happiness and contentment.

* Joy: A more general term for happiness and a feeling of great pleasure.

* Elation: This word implies a feeling of intense joy and excitement.

* Delight: A feeling of great pleasure and satisfaction.

* Rapture: A state of intense joy, ecstasy, and overwhelming happiness.

If you're trying to describe a specific situation, you could use phrases like:

* A state of pure joy

* Overwhelming happiness

* Unbridled joy

* A moment of pure bliss

Ultimately, the best way to describe "happily happy" will depend on the specific context and the feeling you want to evoke.