This is the 6636th most frequent Japanese word.
ナーフ
"ナーフ" (nāfu) is a slang term derived from "nerf" in gaming, meaning to weaken or reduce the effectiveness of something, typically a character, weapon, or ability.
ナーフ in this sentence refers to the act of reducing the capabilities or effectiveness of the hero in a video game.
彼らはバランスを良くするために新しいヒーローをナーフしました。
They nerfed the new hero to balance the gameplay.
ナーフ here is used to describe the result of weakening the weapons in the context of game mechanics.
アップデート後、武器が明らかにナーフされています。
After the update, the weapons have been obviously nerfed.
In this example, ナーフ is employed to express a noticeable reduction in the character's abilities intentionally made by the developers.