Are you wanting to learn American English?
Here's some helpful language learning information from English tutor Alice!
What are some other ways to say 'No'
No thanks.
Nah.
Eh I'd rather not.
Not really.
Nope.
No way.

Question

Are you wanting to learn American English? 
Here's some helpful language learning information from English tutor Alice! 
What are some other ways to say 'No'
No thanks. 
Nah. 
Eh I'd rather not. 
Not really. 
Nope. 
No way.

Answer

It depends on the situation. You don't want to be "polite" to someone dangerous. 
no way in hell
when pigs fly
get lost
I'll tell Mommy on you!
I'd have to check with the wife
not tonight
no energy
at my age?
maybe another time
give me a rain check
tomorrow's a school day
I'm broke
not after what happened last time
against my religion

Answer

You feelin' lucky?