G. Metr, "mother" + polis, "city"
Metropolis literally means "mother city," but it's used today to denote a very large city, like Los Angeles or New York.
L. con, "all, together" + spir, "breath"
Conspirators breathe together. Huddled together in the dim light of a flickering lamp, they share their breaths in common cause.
Check out PrestwickHouse.com for more.