Contrary to popular belief, majesticness IS in fact a word. It is a derivative of the word majestic. When something or someone is majestic, they are full of majesticness. It’s like, a magical substance that makes someone, in fact, magestic.

Showing impressive beauty or dignity

If you describe something or someone as majestic, you think they are very beautiful, dignified, and impressive.

Something that is beautiful, gracefully, and all-around magical!

The term was also used in the movie Hunt for the Wilder People, directed by Taika Waititi

Relating to the nature of clouds

Used to describe how majestic something is when the speaker's goal is to sound high class.

Something that is more majestic than anything else. It has power over the whole world.