Definition of "vacillate" []

  • To sway from one side to the other; oscillate. (verb-intransitive)
  • To swing indecisively from one course of action or opinion to another. See Synonyms at hesitate. (verb-intransitive)
  • To fluctuate in one's opinions; be indecisive (verb)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

  • To sway from side to side physically; totter or waver (verb) (c) HarperCollins Publishers Ltd 2016

Use "vacillate" in a sentence
  • "The word vacillate means “to be indecisive … to sway from side to side.”"
  • "Versions of the words "vacillate" and "indecisive" were much more in evidence on the McCain campaign conference call this morning than in past calls."
  • "And let's face it - as military family members we often vacillate between reaching out and pulling back abruptly when no one grabs the hand we've extended."