Griev"ous*ly

from The Collaborative International Dictionary of English v.0.48
Grievous \Griev"ous\, a. [OF. grevous, grevos, LL. gravosus. See
   {Grief}.]
   1. Causing grief or sorrow; painful; afflictive; hard to
      bear; offensive; harmful.
      [1913 Webster]

            The famine was grievous in the land.  --Gen. xii.
                                                  10.
      [1913 Webster]

            The thing was very grievous in Abraham's sight.
                                                  --Gen. xxi.
                                                  11.
      [1913 Webster]

   2. Characterized by great atrocity; heinous; aggravated;
      flagitious; as, a grievous sin. --Gen. xviii. 20.
      [1913 Webster]

   3. Full of, or expressing, grief; showing great sorrow or
      affliction; as, a grievous cry. -- {Griev"ous*ly}, adv. --
      {Griev"ous*ness}, n.
      [1913 Webster]
    
from Moby Thesaurus II by Grady Ward, 1.0
71 Moby Thesaurus words for "grievously":
      abominably, agonizingly, awfully, baldly, balefully, bitterly,
      blatantly, brashly, brokenheartedly, calamitously, cataclysmically,
      catastrophically, confoundedly, cruelly, crushingly, damnably,
      deadly, deathly, deplorably, deucedly, distressfully,
      distressingly, dolefully, dolorously, dreadfully, egregiously,
      excessively, excruciatingly, exorbitantly, extravagantly,
      flagrantly, frightfully, grieffully, harrowingly, heartbreakingly,
      hellishly, horribly, improperly, inexcusably, infernally,
      inordinately, intolerably, lamentably, miserably, mournfully,
      nakedly, openly, painfully, pathetically, piteously, pitiably,
      plaintively, ruefully, sadly, shatteringly, shockingly,
      something awful, something fierce, sorely, sorrowfully,
      staggeringly, tearfully, terribly, torturously, tragically,
      unashamedly, unbearably, unconscionably, unduly, unpardonably,
      woefully

    

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