Source : Webster's Revised Unabridged Dictionary (1913)

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.

Source : WordNet®

stupefy
     v 1: make dull or stupid or muddle with drunkenness or
          infatuation [syn: {besot}]
     2: be a mystery or bewildering to; "This beats me!"; "Got me--I
        don't know the answer!"; "a vexing problem"; "This
        question really stuck me" [syn: {perplex}, {vex}, {stick},
         {get}, {puzzle}, {mystify}, {baffle}, {beat}, {pose}, {bewilder},
         {flummox}, {nonplus}, {gravel}, {amaze}, {dumbfound}]
     3: make senseless or dizzy by or as if by a blow; "stun fish"
        [syn: {stun}]
     [also: {stupefied}]