THESAURUS
cop a plea
acknowledge, admit, admit everything, allow, avow, come clean, concede, confess, cop out, escape without penalty, get away with, get by, get off, get off cheap, go at liberty, go free, go scot free, grant, let on, open up, out with it, own, own up, plead guilty, spill, spill it, spit it out, tell all, tell the truth, win freedom