prier

from The Collaborative International Dictionary of English v.0.48

Prier \Pri"er\, n. [From {Pry}.]
   One who pries; one who inquires narrowly and searches, or is
   inquisitive.
   [1913 Webster]

         So pragmatical a prier he is into divine secrets.
                                                  --Fuller.
   [1913 Webster]