This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Fluctuating; being in doubt; undetermined; indecisive; uncertain; unsteady.

v. Present participle of waver.

n. indecision in speech or action

adj. uncertain in purpose or action

n. the quality of being unsteady and subject to changes

"Sarah was standing in the doorway, her expression wavering between revulsion and amazement."

wavered    wavering    wavers   

motility    movement    motion    move    hesitate    waffle    swing    communicator    voice    sound   

flicker    falter    totter    waiver   

dwell on    linger    linger over    oscillate    vibrate    hover    boggle    vacillate    falter   

reel    swing    flutter    vacillate    fluctuate    wave    oscillation    fluctuation   

Laver    aver    baver    braver    caver    craver    disfavor    engraver    favor    flavor   

quaver    hesitancy    irresolution    dovo    fluctuation    steely