Perdure, which mean to continue or endure for a long time, has several antonyms that can help to clarify its meaning. One antonym is "cease," which means to stop or come to an end. Another is "discontinue," which refers to putting an end to something that had been ongoing. A third antonym is "terminate," meaning to bring something to an end or conclude it. Finally, "expire" is another antonym for perdure, indicating that something has come to its natural end or has reached its expiration date. These antonyms provide a range of options for expressing the opposite of perdure, depending on the specific context in which the word is used.