1. A complainer; a sufferer; one who commences a legal process against an offender; a plaintiff.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• complicant,
• complinent,
• complanint,
• complaininf,
• complaicant,
• comlainant,
• complaiment,
• complaintant,
• complainents,
• complanants,
• complainin,
• compainant,
• complaiint,
• complaisent,
• complaintants,
• complaniant,
• complainnat,
• complainat,
• complacant,
• complaiant

• complement,
• complaisance,
• complacency,
• complainingly,
• completion,
• compliment,
• complaint,
• complainer,
• complaintive,
• complexion,
• complicity,
• complexity,
• compliant,
• complaisant,
• complaining,
• complexly,
• complication,
• complemental,
• compulsivity,
• complicate,
• Complicating,
• compliments,
• compline,
• complacence,
• compulsion,
• complacent,
• compiling,
• complain,
• complying,
• complacently,
• complicated.

The adjective form of the word "complainant" is "complaining".

The plural of the "complainant" can be the "complainants".

The singular of the "complainant" can be the "complainant".