complaint A2

/kəmˈpleɪnt/ A statement that you are unhappy or annoyed about something.

plaint C2+

/pleɪnt/ an expression of grief or complaint; a lament

plaintiff C2+

/ˈpleɪntɪf/ a person who brings a legal action against another in a court of law

plaintive C2+

/ˈpleɪntɪv/ sounding sad and mournful