Magnificent (adjective)- marked by stately grandeur and lavishness.

Source: Merriam-Webster

I saw this word while reading the 1812 version of the Brothers Grimm story, Cinderella. Cinderella uses it in reference to the ball her stepsisters attended the night before.

The next morning the two sisters came to the kitchen. They were angry when they saw that she had sorted the lentils, for they wanted to scold her. Because they could not, they began telling her about the ball. They said, “Cinderella, it was so grand at the ball. The prince, who is the best looking man in the whole world, escorted us, and he is going to choose one of us to be his wife.”

“Yes,” said Cinderella, “I saw the glistening lights. It must have been magnificent.”

Here, Cinderella is saying the party was extravagant and high-class. Basically, she’s saying the party looked like a good time.