Source : Webster's Revised Unabridged Dictionary (1913)

Equivocator \E*quiv"o*ca`tor\, n.
   One who equivocates.

         Here's an equivocator that could swear in both the
         scales against either scale, yet could not equivocate
         to heaven.                               --Shak.

Source : WordNet®

equivocator
     n : a respondent who avoids giving a clear direct answer [syn: {hedger}]