complainant

Definitions of complainant
1

n a person who brings an action in a court of law

Synonyms:
plaintiff
Antonyms:
defendant, suspect
a person or institution against whom an action is brought in a court of law; the person being sued or accused
Types:
petitioner, suer
someone who petitions a court for redress of a grievance or recovery of a right
Type of:
litigant, litigator
(law) a party to a lawsuit; someone involved in litigation

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