The phrase "cradle to grave" refers to an individual's entire lifespan, from birth to death. The antonyms for this phrase include "incomplete" or "partially lived," indicating a life that was cut short or not fully experienced. Another antonym could be "reborn," suggesting that an individual's life has been renewed or restarted. Similarly, "reincarnated" could also be an antonym, indicating a life after death. Alternatively, "fragmented" could be an antonym, suggesting that an individual's life was broken up or disconnected. Finally, "interim" could be an antonym, indicating a period of time between the beginning and end of one's life.