petitioner

from WordNet (r) 3.0 (2006)
petitioner
    n 1: one praying humbly for something; "a suppliant for her
         favors" [syn: {petitioner}, {suppliant}, {supplicant},
         {requester}]
    2: someone who petitions a court for redress of a grievance or
       recovery of a right [syn: {suer}, {petitioner}]
    
from The Collaborative International Dictionary of English v.0.48
Petitioner \Pe*ti"tion*er\, n.
   One who presents a petition.
   [1913 Webster]
    
from Moby Thesaurus II by Grady Ward, 1.0
45 Moby Thesaurus words for "petitioner":
      accusant, accuser, adorer, allegator, appellant, applicant, asker,
      aspirant, beadsman, beggar, bidder, candidate, celebrant,
      chapelgoer, churchgoer, claimant, communicant, complainant,
      congregation, daily communicant, delator, evangelist, idolater,
      impeacher, impugner, indictor, informer, libelant, party,
      plaintiff, postulant, prayer, prosecutor, revivalist, seeker,
      solicitant, solicitor, suitor, suppliant, supplicant, supplicator,
      the prosecution, venerator, votary, worshiper

    

[email protected]