It’s easy to make fun of the power word spells. There’s a lot of silliness that results from the game’s mechanics intersecting with the very simple flavour of an arcane word that can stun, blind or kill. Such as how they’re a single word that takes seven to nine pages in a spell book. Or how they take a standard action to cast despite talking being a free action. Or how they target a single creature at close range despite likely being audible to everyone in twice that distance. And there’s how the target doesn’t actually need to hear the word, so you can kill a monster without ears with a single potent magic word.
It’s the ultimate in harsh language.