A swanny is a person who is very good and kind. It is often used to show surprise or to say that something is very good.
The word swanny is usually used in a happy and surprised way.
Examples:
She is a real swanny, always helping others.
Wow, you're such a swanny for helping me!
The swanny brought us all presents.
I feel like a swanny when I help my friends.
He's the swanniest person I know, always doing nice things for others.
The swanny made everyone smile with her kindness.