Final answer:
The term 'unconditional surrender' refers to the act of capitulating without negotiation over the terms, often imposed by the victorious party in a conflict, exemplified by Allies' demands in World War II.
Step-by-step explanation:
The term that means to surrender unconditionally or on stipulated terms is unconditional surrender. This concept played a significant role during pivotal moments in history, particularly in World War II. As articulated by President Roosevelt during the Casablanca Conference in 1943, an unconditional surrender was demanded from Germany and Japan to prevent any separate peace negotiations and ensure a complete transformation of these nations post-war. The expectation was that the defeated would surrender without negotiation over the terms of their capitulation, resulting in an imposition of the victor's terms. In the broader scope of history, unconditional surrenders have sometimes been controversial due to the harshness and complete submission they demand from the vanquished party.