alternate

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Verb[change]

Plain form
alternate

Third-person singular
alternates

Past tense
alternated

Past participle
alternated

Present participle
alternating

  1. To alternate is change between two positions.
    She would alternate between laughing and crying without warning.
  2. To alternate is to take turns.
    My wife and I would alternate doing the dishes.
  3. To alternate, something changes regularly and repeatedly.
    The traffic lights would alternate from red to green.