[quote=Sketcher]
I'm guessing it's something like an incantation. You need to say the words.
[/quote]

the problem with that is that it is never specified if the attack requires the user to say the name of the technique. Like I don't think Goku ever really needed to say the kamehameha wave's name to use it since energy is not magic in DBZ and plenty of characters have used powerful energy blasts without saying a word. I feel like it is just used for being extra dramatic.