whole party to a plot; whole gang; fellow conspirators
A yojijukugo referring to all members of a conspiracy or criminal gang. Often used in contexts of collusion or illegal schemes.
The whole gang gathered and plotted a crime.
The police rounded up the entire ring of conspirators.
一味 (いちみ) also means 'a gang' or 'conspirators', but 一味徒党 emphasizes the entirety of the group.
徒党 (ととう) means 'faction' or 'clique', often with a negative connotation, but is less common alone.
A yojijukugo composed of 一味 (one group, gang) and 徒党 (faction, clique). The combination reinforces the idea of a complete group of conspirators.