The Collaborative International Dictionary of English v.0.48:

Wheedle \Whee"dle\, v. t. [imp. & p. p. Wheedled; p. pr. & vb.
   n. Wheedling.] [Cf. G. wedeln to wag with the tail, as a
   dog, wedel a fan, tail, brush, OHG. wadal; akin to G. wehen
   to blow, and E. wind, n.]
   [1913 Webster]
   1. To entice by soft words; to cajole; to flatter; to coax.
      [1913 Webster]

            The unlucky art of wheedling fools.   --Dryden.
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            And wheedle a world that loves him not. --Tennyson.
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   2. To grain, or get away, by flattery.
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            A deed of settlement of the best part of her estate,
            which I wheedled out of her.          --Congreve.
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The Collaborative International Dictionary of English v.0.48:

Wheedle \Whee"dle\, v. i.
   To flatter; to coax; to cajole.
   [1913 Webster]

WordNet (r) 3.0 (2006):

wheedle
    v 1: influence or urge by gentle urging, caressing, or
         flattering; "He palavered her into going along" [syn:
         wheedle, cajole, palaver, blarney, coax, sweet-
         talk, inveigle]

Moby Thesaurus II by Grady Ward, 1.0:

50 Moby Thesaurus words for "wheedle":
   adulate, advocate, apply pressure, banter, beset, besiege,
   beslobber, beslubber, blandish, blarney, bug, buttonhole, cajole,
   call on, call upon, coax, compliment, con, conceit, dun,
   exert pressure, exhort, fawn upon, flatter, high-pressure,
   importune, insist, insist upon, jawbone, lobby, make fair weather,
   nag, nag at, oil the tongue, palaver, pester, plague, plead with,
   ply, praise, press, pressure, push, recommend, slobber over,
   soft-soap, sweet-talk, tease, urge, work on