Loss is a feeling and emotion. If there is no gain, what is the loss? If there are no ups and downs? The gap between ideological expectations and reality, loss is explained by failure. Victory and success are not expressions of emotions and feelings, but results. Therefore, the antonym of loss is the feeling of victory and success, which is "excitement".
< p>Loss corresponds to excitement, and fall corresponds to endeavor. Because loss corresponds to rise, ending corresponds to endeavor