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vacillation

[vas-uh-ley-shuh n]
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noun
  1. an act or instance of vacillating.
  2. a state of indecision or irresolution.
  3. unsteady movement; fluctuation.

Origin of vacillation

1350–1400; Middle English vacillacion < Latin vacillātiōn- (stem of vacillātiō) a swaying. See vacillate, -ion
Related formsnon·vac·il·la·tion, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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Word Origin and History for vacillation

n.

c.1400, from Latin vacillationem (nominative vacillatio) "a reeling, wavering," noun of action from past participle stem of vacillare "sway to and fro." Originally in reference to opinion or conduct; literal sense is recorded from 1630s.

Online Etymology Dictionary, © 2010 Douglas Harper