عبرتناک شکست
A crushing, humiliating, or catastrophic defeat of such magnitude and severity that it serves as a profound lesson, a stark warning, or a sobering example for others. It is a defeat that is not just a loss but a spectacle of failure, intended to instill "عبرت" (ibrat)—moral instruction, admonition, or a cautionary tale—in both the vanquished and observers.