complainant

A person who says that something is wrong or that someone has treated them badly.

• The complainant reported loud music.
• We sent each complainant a written response.
• The officer asked the complainant for more details.

Common phrases: an anonymous complainant, the original complainant, contact the complainant

A person who starts a civil court case against someone else.

• The complainant asked for damages.
• The judge heard evidence from both complainants.
• The complainant filed a claim against her former employer.

Similar words: plaintiff, claimant

Opposites: defendant

Common phrases: the complainant, complainant and defendant, a civil complainant