To superhype something is to make it seem very exciting or important, often by using a lot of advertising or talking about it a lot.
Superhype can make people think that something is really cool or amazing, but sometimes it can make people feel like they are being tricked or lied to.
Examples:
The company tried to superhype their new product.
They superhyped the concert, but it wasn't that great.
I don't want to superhype it too much, but it's going to be awesome.
Don't superhype the movie too much, or people will be disappointed.
They superhyped the party as the best ever, but it was just okay.
The store superhyped the sale, but there wasn't much to buy.