Can we be able to say nerf... every time I try to say nerf its censored so I say "nerved" which is annoying. If this term has a bad meaning I don't know about then forget this post.

Yes, the Nerf toys were long known for their soft foam. Rather than playing hardball with a regular baseball, you could play with a soft foam Nerf ball, as just one example. In gaming, it now means, made easier or less hard. Maybe the toy company considers it a threat to their brand, allowing other companies to turn it into a generic word. Maybe that's why it's not in the regular list. There are many normal and appropriate words that are not in the regular approved words list in game. Some of them might be absent because whatever dictionary they used to create allowed words wasn't very big, and KI may not have realized how chatty people in the games would be. They have added some words to the list, over time, as when gardening words or fishing ones were needed in Wizard to talk about normal game activities, and removed others that were problematic, mostly due to misuse.