You can make up a good word in several ways:
A stupid, made-up word. The same can be said more efficiently with "good."However, good would not make for a very interesting song.
Good spelling! That word came from a song in the kid's movie, 'Mary Poppins', and is completely made up.
Supercalifragilisticexpialidocious is a made-up word popularized in the movie "Mary Poppins." It is used to express a feeling of joy or excitement, or to indicate that something is extraordinary or exceptionally good.
I made up the word fish NOW EVERYONE BOW DOWN TO ME :p
neologism
A word made up of two other words is called a compound word.
No, "pactisly" is not a recognized word in the English language. It might be a misspelling or a made-up term.
made up of visible parts
Rick Riordan had made up the word skewered as you can see in the book The Lightning Thief.
A made up word.
A word that you made up.
a word i made up