The antonyms for the word "more perishing" would be words that indicate survival, endurance, or longevity. These could include words such as durable, everlasting, eternal, immortal, resilient, or enduring. By using these words, one can convey the opposite meaning of "more perishing," which implies a decrease in the quality or longevity of something. For example, if one were to describe a sturdy oak tree, the antonym of "more perishing" would be "enduring" as it implies the ability to withstand the test of time. In contrast, using the word "more perishing" would indicate that the tree is in a state of decline or decay.