The antonyms for the term "kept existence" are extinction, termination, and annihilation. While "kept existence" refers to the state or condition of being preserved, maintained, or continued, the antonyms describe the opposite, which is the end or cessation of something. Extinction implies that a species, concept or entity no longer exists, termination denotes the conclusion of an activity or process, and annihilation suggests absolute destruction, erasure or obliteration. These antonyms highlight the vulnerability and impermanence of life, ideas, and things, and invite us to appreciate and value the things that we have while they last.