Six of one half a dozen of the other is a phrase that means one choice is no better than the other and they're essentially the same thing. There are several synonyms for this phrase, including: 1. Same difference: This phrase is used when two things are so similar that it doesn't matter which one you choose. 2. Tweedledum and Tweedledee: This phrase describes two things that are essentially identical, just like the twin characters in Alice in Wonderland. 3. Six and two threes: This phrase means that two things are equal in value, despite appearing to be different. 4. It's a wash: This phrase means that neither choice is better than the other. 5. Potato, potahto: This phrase means that two things have different names, but they're essentially the same thing.