Petitioner

n.

1.

One who presents a petition.

Noun	1.	petitioner - one praying humbly for something; "a suppliant for her favors" Synonyms: suppliant, supplicant
	2.	petitioner - someone who petitions a court for redress of a grievance or recovery of a right Synonyms: suer

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