Source : Webster's Revised Unabridged Dictionary (1913)

Waver \Wa"ver\, v. i. [imp. & p. p. {Wavered}; p. pr. & vb. n.
   {Wavering}.] [OE. waveren, from AS. w[ae]fre wavering,
   restless. See {Wave}, v. i.]
   1. To play or move to and fro; to move one way and the other;
      hence, to totter; to reel; to swing; to flutter.

            With banners and pennons wavering with the wind.
                                                  --Ld. Berners.

            Thou wouldst waver on one of these trees as a terror
            to all evil speakers against dignities. --Sir W.
                                                  Scott.

   2. To be unsettled in opinion; to vacillate; to be
      undetermined; to fluctuate; as, to water in judgment.

            Let us hold fast . . . without wavering. --Heb. x.
                                                  23.

            In feeble hearts, propense enough before To waver,
            or fall off and join with idols.      --Milton.

   Syn: To reel; totter; vacillate. See {Fluctuate}.

Source : WordNet®

wavering
     adj : uncertain in purpose or action [syn: {vacillant}, {vacillating}]
     n 1: indecision in speech or action [syn: {hesitation}, {vacillation}]
     2: the quality of being unsteady and subject to fluctuations;
        "he kept a record of price fluctuations" [syn: {fluctuation}]