[1] : The Collaborative International Dictionary of English v.0.48

sadly \sad"ly\, adv.
   1. wearily; heavily; firmly. obs.
      1913 webster

            in go the spears full sadly in arest. --chaucer.
      1913 webster

   2. seriously; soberly; gravely. obs.
      1913 webster

            to tell thee sadly, shepherd, without blame
            or our neglect, we lost her as we came. --milton.
      1913 webster

   3. grievously; deeply; sorrowfully; miserably. "he sadly
      suffers in their grief." --dryden.
      1913 webster

[2] : WordNet (r) 2.0

sadly
     adv 1: in an unfortunate way; "sadly he died before he could see
            his grandchild" syn: unhappily ant: happily
     2: with sadness; in a sad manner; "`she died last night,' he
        said sadly"
     3: in an unfortunate or deplorable manner; "he was sadly
        neglected"; "it was woefully inadequate" syn: deplorably,
         lamentably, woefully
see also:
unhappily happily deplorably lamentably woefully 

[3] : Moby Thesaurus II by Grady Ward, 1.0

83 moby thesaurus words for "sadly":
   abominably, agonizingly, awfully, baldly, balefully, bitterly,
   blatantly, bleakly, brashly, by ill hap, by ill luck, confoundedly,
   cruelly, damnably, deadly, deathly, dejectedly, deplorably,
   despondently, deucedly, dismally, distressfully, distressingly,
   dolorously, dreadfully, drearily, egregiously, excessively,
   excruciatingly, exorbitantly, extravagantly, flagrantly,
   frightfully, funereally, gloomily, gravely, grievously, grimly,
   harrowingly, heartbreakingly, heavily, hellishly, horribly,
   improperly, in adverse circumstances, inexcusably, infernally,
   inordinately, intolerably, lamentably, lugubriously, miserably,
   morosely, mournfully, nakedly, openly, painfully, pathetically,
   piteously, pitiably, ruefully, shatteringly, shockingly, solemnly,
   somberly, sombrously, something awful, something fierce, sorely,
   staggeringly, terribly, torturously, unashamedly, unbearably,
   unconscionably, unduly, unfortunately, unhappily, unluckily,
   unpardonably, unprovidentially, woefully, wretchedly

Sadly >> S Words
Sadly, definition of term: Sadly
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