The Collaborative International Dictionary of English v.0.48:

Violently \Vi"o*lent*ly\, adv.
   In a violent manner.
   [1913 Webster]

WordNet (r) 3.0 (2006):

violently
    adv 1: in a violent manner; "they attacked violently" [ant:
           nonviolently]

Moby Thesaurus II by Grady Ward, 1.0:

29 Moby Thesaurus words for "violently":
   all to pieces, deliriously, demonically, desperately,
   destructively, distractedly, fanatically, fiercely, frantically,
   frenetically, frenziedly, furiously, hotly, like blazes, like fury,
   like mad, like one possessed, madly, rabidly, rigorously, severely,
   stormily, turbulently, uncontrollably, vehemently, venomously,
   virulently, wildly, with a vengeance



Bouvier's Law Dictionary, Revised 6th Ed (1856):

VIOLENTLY, pleading. This word was formerly supposed to be necessary in an
indictment, in order to charge a robbery from the person, but it has been
holden unnecessary. 2 East, P. C. 784; 1 Chit. Cr. Law, *244. The words
"feloniously and against the will," usually introduced in such indictments,
seem to be sufficient. It is usual also to aver a putting in fear, though
this does not seem to be requisite. Id.