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hold sway (over someone)
To have or exert great control or influence (over someone). My father retired from politics years ago, but he still holds sway in the town to this day. It is suspected that the president's wife holds a lot of sway over the administration's policy.
sway back and forth
to swing or bend from one direction to another. The pendulum swayed back and forth, counting off the seconds. Mary was swaying back and forth, keeping time to the music.
sway from side to side
to swing or bend from one side to the other. The car swayed from side to side as we started out, indicating that something was seriously wrong. He swayed from side to side with the rhythm of the music.
sway someone to something
to convince someone to do something. I think I can sway her to join our side. We could not sway Ted to our position.
See also: sway
hold sway over
Dominate, have a controlling influence over, as in He held sway over the entire department. This idiom uses the noun sway in the sense of "power" or "dominion," a usage dating from the late 1500s.
hold ˈsway (over somebody/something)(literary) (of a person, a movement, an idea, etc.) have power, control or great influence over somebody/something: Rebel forces hold sway over much of the island. ♢ These ideas held sway for most of the century.
To have a controlling influence; dominate.