Where does this definition of the difference between tweedledum and tweedledee come from?
This entry for the difference between tweedledum and tweedledee is sourced from GetWord Corpus, one of the dictionaries and corpora merged into Lughet.
What is Lughet?
Lughet is a free trilingual dictionary covering nearly five million entries across Uyghur, Chinese, and English, drawn from more than ten source dictionaries and corpora.