Vacillate meaning

văsə-lāt
To change between one state and another; fluctuate.

The weather vacillated between sunny and rainy.

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To waver in mind; show indecision.
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To vacillate is to waver back and forth and be unable to choose between options.

An example of vacillate is when you pick black tiles, then white tiles, then blue tiles, then black tiles and can't make up your mind.

verb
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To be unable to choose between different courses of action or opinions; waver.

She vacillated about whether to leave.

verb
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(intransitive) To swing indecisively from one course of action or opinion to another.
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(archaic) To sway from one side to the other.
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To sway to and fro; waver; totter; stagger.
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To fluctuate or oscillate.
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(intransitive) To sway unsteadily from one side to the other; oscillate.
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Origin of vacillate

  • Latin vacillāre vacillāt- to waver

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin vacillātum, supine form of vacillō (“sway, waver").

    From Wiktionary