plaintively

from WordNet (r) 3.0 (2006)

plaintively
    adv 1: in a plaintive manner; "the last note of the song rang
           out plaintively"

from The Collaborative International Dictionary of English v.0.48

Plaintive \Plain"tive\, a. [F. plaintif. See {Plaintiff}, n.]
   1. Repining; complaining; lamenting. --Dryden.
      [1913 Webster]

   2. Expressive of sorrow or melancholy; mournful; sad. "The
      most plaintive ditty." --Landor.
      [1913 Webster] -- {Plain"tive*ly}, adv. --
      {Plain"tive*ness}, n.
      [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

19 Moby Thesaurus words for "plaintively":
      brokenheartedly, complainingly, dolefully, dolorously, fretfully,
      grieffully, grievously, groaningly, lamentingly, moanfully,
      mournfully, peevishly, petulantly, querulously, ruefully,
      sorrowfully, tearfully, wailfully, woefully

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