The phrase 'by time' has various synonyms that we use in our daily lives. One such synonym is 'over time,' which refers to an extended period. 'Gradually' is another synonym that denotes a steady process. 'In due course' is a more formal alternative that conveys the meaning of happening in the appropriate or anticipated time. 'Eventually' and 'finally' are also synonyms that suggest the eventual occurrence of something. 'Someday' is a synonym that suggests an indefinite time in the future, while 'in time' refers to something happening before or by a specified deadline. Using these synonyms can add variety to our communication, enabling us to express our thoughts and ideas in a more nuanced manner.