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Valid in these dictionaries

TWL/NWL (Scrabble US/CA/TH)
SOWPODS/CSW (Scrabble UK / ALL)
ENABLE (Words with Friends)

Meaning of vacillate

1 definition found

From WordNet (r) 3.0 (2006) [wn]:

  vacillate
      v 1: be undecided about something; waver between conflicting
           positions or courses of action; "He oscillates between
           accepting the new position and retirement" [syn: {hover},
           {vibrate}, {vacillate}, {oscillate}]
      2: move or sway in a rising and falling or wavelike pattern;
         "the line on the monitor vacillated" [syn: {fluctuate},
         {vacillate}, {waver}]

Source : WordNet ® Princeton University. 2010.

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OCTWL / TWL : The official dictionary for scrabble game in United States, Canada and Thailand.
SOWPODS / CSW : UK and the rest of the world uses this dictionary for various word games including scrabble.
ENABLE - This is the default dictionary for Words with Friends.

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