What is awesome in japanese?

Question:

please give me the japanese letters (I don't really know what they're called.) and don't screw me. This is important!

Answer:

It depends on when you are using it but I would say,
*すごい (sugoi) adjective form
それすごい！(sore sugoi) - it's awesome!
If you want to just say "Awesome!"
すげー(sugee) would be the best word to use it.
This is informal way to say awesome but if you want to say it formally
it would be different when and what occasion you are using for.
I think すごい(sugoi) would work in formal way too.