step aside
US /step əˈsaɪd/
UK /step əˈsaɪd/

1.
to move out of the way
:
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Please step aside so others can pass.
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The guard asked him to step aside for a moment.
2.
to resign from a position of authority or power
:
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The CEO was asked to step aside after the scandal.
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It's time for the older generation to step aside and let new leaders emerge.