stand down
• withdraw or resign from a position or office.
• "he stood down as leader of the party"
• relax after being ready or alert.
• "no further action was required and all units stood down"
Similar:
relax,
stand easy,
come off full alert,
Opposite:
stand by,
stand-down
noun
• a period of relaxation after a state of alert.
• "news of the stand-down had not reached Mogadishu"
