The phrase "till end of time" is often used to depict everlasting or permanent situations. However, some antonyms of this phrase include "temporary", "momentary", and "fleeting". These words suggest that something is short-lived or not meant to last forever. Other antonyms that can replace "till end of time" include "transient", "ephemeral", and "transitory". Such words are useful when describing something that is impermanent, fleeting, or short-lived. In contrast to the "till end of time" phrase, they convey the idea of change, movement, and transience. Therefore, these antonyms provide a useful contrast that enhances the understanding and meaning of the phrase "till end of time.