Opposite words for retire:
rise, shift, pass on, employ, arise, beard, arouse, contract, go on, turn out, bestir, subcontract, hire, reemploy, waken, advance, reawake, dare, face, progress, wake, awaken, sign, march on, reawaken, rehire, rouse, confront, uprise, brave, engage, retain, breast, get up, take on, stir, outbrave, brazen, defy, awake, recruit, keep, move on.
Usage samples:
  1. Lieutenant O'Malley, you will retire.
    "A Yankee Flier in Italy", Rutherford G. Montgomery.
  2. Evil would retire abashed before the timid glance of her pure eyes."
    "Around the World with Josiah Allen's Wife", Marietta Holley.
  3. Retire in safety then, you have your pass.
    "The Works of Aphra Behn, Vol. I (of 6)", Aphra Behn.
  4. The Court directed the Marshal to provide a room for the prisoners to retire to, when they desired.
    "Trial of the Officers and Crew of the Privateer Savannah, on the Charge of Piracy, in the United States Circuit Court for the Southern District of New York", A. F. Warburton.