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.
      [1913 Webster]

            And wheedle a world that loves him not. --Tennyson.
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   2. To grain, or get away, by flattery.
      [1913 Webster]

            A deed of settlement of the best part of her estate,
            which I wheedled out of her.          --Congreve.
      [1913 Webster]

WordNet (r) 3.0 (2006):

wheedling
    n 1: the act of urging by means of teasing or flattery [syn:
         blandishment, wheedling]

Moby Thesaurus II by Grady Ward, 1.0:

102 Moby Thesaurus words for "wheedling":
   adulation, adulatory, allurement, bland, blandishing, blandishment,
   blarney, blarneying, bunkum, buttery, buttonholing, cajolement,
   cajolery, cajoling, coaxing, compliment, complimentary, conning,
   courtierly, courtly, demanding, dunning, engagement, enlistment,
   exhortation, exhortative, exhortatory, eyewash, fair words,
   fair-spoken, fawning, fine-spoken, flattering, flattery, fulsome,
   grease, gushing, honey-mouthed, honey-tongued, honeyed,
   honeyed phrases, honeyed words, hortation, hortative, hortatory,
   importunate, importunateness, importunity, incense, inducement,
   insincere, insinuating, insistent, jawboning, lobbying,
   mealymouthed, nagging, obsequious, oil, oily, oily-tongued,
   palaver, persuading, persuasion, persuasive, pestering, plaguing,
   plying, praise, preaching, preachment, pressing, pressure,
   pretty lies, sales talk, salesmanship, selling, slimy, slobbery,
   smarmy, smooth, smooth-spoken, smooth-tongued, snow job, soap,
   soapy, soft soap, soft-soaping, solicitation, suasion, suasive,
   sweet nothings, sweet talk, sweet words, sycophancy, sycophantic,
   teasing, unctuous, urgency, urgent, urging, working on