The phrase "goes the bottom" can be replaced with a variety of synonyms depending on the context in which it is used. Some examples include "hits rock bottom," "reaches the nadir," or "falls to the depth." Other options include "plummets," "sinks," or "descends." These synonyms all convey a similar meaning of something or someone reaching a point of low or diminished state. Each word may be more appropriate in different contexts, whether it be discussing the stock market or personal relationships. Ultimately, the choice of which synonym to use depends on the specific situation and the desired tone or meaning.