lay down the law

47 Moby Thesaurus words for "lay down the law":
      be responsible for, bestride, call the signals, captain, carry on,
      command, conduct, control, dictate, direct, dogmatize, dominate,
      engineer, govern, handle, have the ascendancy, head, head up, lead,
      lead on, make the rules, manage, maneuver, manipulate, master,
      mastermind, officer, oracle, oraculate, order, play first fiddle,
      pontificate, predominate, preponderate, prescribe, prevail,
      proclaim, pull the strings, quarterback, regulate, rule the roost,
      run, skipper, take command, take the lead, twist, wear the pants