In the context of Roblox, a "dupe" (duplication) script is a piece of code executed through a third-party exploit (like Synapse X or Krnl). It exploits vulnerabilities in the game’s server-client communication to trick the game into thinking you have more items than you actually do.
Dominating the in-game economy and leaderboards. The Dark Side: Why "Better" is Often Worse islands dupe script better
Scripts that can duplicate high-value items like Dragon Harpoons or Trophies instantly. In the context of Roblox, a "dupe" (duplication)