The Collaborative International Dictionary of English v.0.48:

Stupefied \Stu"pe*fied\, a.
   Having been made stupid.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Stupefy \Stu"pe*fy\, v. t. [imp. & p. p. Stupefied; p. pr. &
   vb. n. Stupefying.] [F. stup['e]fier, fr. L. stupere to be
   stupefied + ficare (in comp.) to make, akin to facere. See
   Stupid, Fact, and cf. Stupefacient.] [Written also
   stupify, especially in England.]
   1. To make stupid; to make dull; to blunt the faculty of
      perception or understanding in; to deprive of sensibility;
      to make torpid.
      [1913 Webster]

            The fumes of drink discompose and stupefy the brain.
                                                  --South.
      [1913 Webster]

   2. To deprive of material mobility. [Obs.]
      [1913 Webster]

            It is not malleable; but yet is not fluent, but
            stupefied.                            --Bacon.
      [1913 Webster]

WordNet (r) 3.0 (2006):

stupefied
    adj 1: as if struck dumb with astonishment and surprise; "a
           circle of policement stood dumbfounded by her denial of
           having seen the accident"; "the flabbergasted aldermen
           were speechless"; "was thunderstruck by the news of his
           promotion" [syn: dumbfounded, dumfounded,
           flabbergasted, stupefied, thunderstruck,
           dumbstruck, dumbstricken]
    2: in a state of mental numbness especially as resulting from
       shock; "he had a dazed expression on his face"; "lay
       semiconscious, stunned (or stupefied) by the blow"; "was
       stupid from fatigue" [syn: dazed, stunned, stupefied,
       stupid(p)]