IPA: /kəmˈpleɪn/
KK: /kəmˈpleɪn/
To express unhappiness or dissatisfaction about something.
She often complains about the noise in the city.
Past: complained
Past Participle: complained
Complain → It is formed from "com-" (meaning together) and "plangere" (meaning to strike or lament). The word originally described the act of expressing sorrow or grief together, often in a formal manner.
Think of people coming 'together' ('com-') to 'lament' ('plangere') about something that troubles them — that's why complain means to express dissatisfaction.