Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • intransitive v. To sway from one side to the other; oscillate.
  • intransitive v. To swing indecisively from one course of action or opinion to another. See Synonyms at hesitate.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. To sway unsteadily from one side to the other; oscillate.
  • v. To swing indecisively from one course of action or opinion to another.

from the GNU version of the Collaborative International Dictionary of English

  • intransitive v. To move one way and the other; to reel or stagger; to waver.
  • intransitive v. To fluctuate in mind or opinion; to be unsteady or inconstant; to waver.

from The Century Dictionary and Cyclopedia

  • To waver; move one way and the other; reel; stagger.
  • To fluctuate in mind or opinion; waver; be irresolute or inconstant.
  • Synonyms and Waver, Oscillate, etc. (see fluctuate), sway.
  • To hesitate.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • v. be undecided about something; waver between conflicting positions or courses of action
  • v. move or sway in a rising and falling or wavelike pattern

Etymologies

Latin vacillāre, vacillāt-, to waver.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin vacillātum, supine form of vacillō ("sway, waver"). (Wiktionary)

Examples

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Comments

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  • This word feels weak-chinned and sounds like the motion of your hand when you're saying "kinda, maybe, I don't know."

    May 25, 2009