Walking in a very proud and confident way, often swinging the body a lot.
This word makes people think of someone who is very sure of themselves, maybe even a little too sure.
Examples:
He walked swaggeringly down the street.
The superhero swaggeringly entered the room.
She swaggeringly showed off her new outfit.
The cat swaggeringly strutted across the room.
The king swaggeringly entered the hall, making sure everyone saw him.
He swaggeringly danced around the room, showing off his new shoes.