The phrase "the bottom" refers to the lowest point or level of something. There are a number of synonyms that can be used to describe this location, such as "the base," "the foot," or "the foundation." Other related words that convey a sense of being beneath or below something include "underneath," "beneath," or "at the foot of." Alternatively, words like "end" or "conclusion" can be used to indicate the final point or outcome of a process or situation. If you are looking to express a more negative or critical view of a particular situation or person, terms like "rock bottom," "the depths," or "the pit" may be more appropriate.