The most likely key on a laptop for knife use in Roblox horror/action games is the E key, but the exact control depends on the specific game mode and what the developer mapped it to. In one Roblox knife tutorial, the knife action is triggered by holding E , and in The Butchery walkthroughs the knife is picked up first before use.

What to try

  1. Open the game and find the knife first, if the game requires picking it up.
  1. Look for an on-screen prompt such as “E to use,” “E to throw,” or “E to interact”.
  1. On a laptop keyboard, press E or hold E while aiming or standing near the target, depending on the game’s control scheme.
  1. If nothing happens, check the in-game settings or control help menu because some Roblox games remap actions differently.

For The Butchery specifically

In public walkthroughs, players are shown collecting the knife as an item before continuing through the game, which suggests it is not a universal “click and attack” weapon and may depend on a scripted interaction. A TikTok guide about The Butchery also focuses on obtaining the knife rather than a universal keyboard combo, which supports that the important step is getting the weapon first.

Laptop keyboard tips

  • Use the main letter keys, not the numpad, if your laptop has one.
  • Make sure Roblox is focused in the game window.
  • If your keyboard layout is unusual, the game may still use the physical key position rather than a remapped character.
  • Try E , then nearby common interaction keys like F or mouse click only if the game’s prompt suggests it.

Clean answer

If you mean The Butchery on Roblox , start by picking up the knife, then try E to use or interact with it, since that is the most common documented knife key shown in Roblox knife guides.