Is superkalafragelistic a word if was define it?

You're referring to supercalifragilisticexpialidocious, which is a made-up word from the movie "Mary Poppins." While it's not a real word in the traditional sense, it has become a part of popular culture and is widely recognized.

You could define it as:

* A nonsensical word used to express delight, wonder, or amazement.

* A word used to describe something exceptionally wonderful or extraordinary.

So, even though it's not in the dictionary, you can use it to add a touch of whimsy and fun to your vocabulary!