The Collaborative International Dictionary of English v.0.48:

Wonder \Won"der\, v. i. [imp. & p. p. Wondered; p. pr. & vb.
   n. Wondering.] [AS. wundrian.]
   [1913 Webster]
   1. To be affected with surprise or admiration; to be struck
      with astonishment; to be amazed; to marvel.
      [1913 Webster]

            I could not sufficiently wonder at the intrepidity
            of these diminutive mortals.          --Swift.
      [1913 Webster]

            We cease to wonder at what we understand. --Johnson.
      [1913 Webster]

   2. To feel doubt and curiosity; to wait with uncertain
      expectation; to query in the mind; as, he wondered why
      they came.
      [1913 Webster]

            I wonder, in my soul,
            What you would ask me, that I should deny. --Shak.
      [1913 Webster]

WordNet (r) 3.0 (2006):

wondering
    adj 1: showing curiosity; "if someone saw a man climbing a light
           post they might get inquisitive"; "raised a speculative
           eyebrow" [syn: inquisitive, speculative,
           questioning, wondering(a)]