Entente cordiale is a French term that refers to a diplomatic agreement or a friendly understanding between two nations or parties. Its antonyms could include words such as hostility, animosity, discord, antagonism, and warlike. These words depict the opposite of a peaceful and amicable relationship between nations or people. In a hostile scenario, there is a lack of diplomacy or understanding, and parties tend to act aggressively towards each other. On the other hand, entente cordiale represents a sense of mutual trust, respect, and harmony between entities, and it promotes cooperation and constructive communication. Thus, it is crucial to strive towards promoting the opposite of its antonyms for a better world.