"Six half dozen the other" is a phrase used to express that two options have little difference or are essentially the same. There are several synonyms of this idiomatic expression. One common one is "same difference," which means that the outcome or result is essentially the same. Another phrase is "potato, potahto," which is typically used to indicate that different variations or interpretations of a situation are equivalent. "Tomato, tomahto" is a similar phrase that conveys the same idea. Other synonyms include "sesquipedalian," "hobson's choice," and "tweedledee and tweedledum." All these sayings suggest a lack of any significant difference in situations or options, emphasizing the equivalence of the choices.