complaining

(verb) express complaints, discontent, displeasure, or unhappiness. Synonyms: complain, kick, plain, sound off, quetch, kvetch. Examples: "My mother complains all day." "She has a lot to kick about."

(verb) make a formal accusation; bring a formal charge. Synonyms: complain. Example: "The plaintiff's lawyer complained that he defendant had physically abused his client."

(adj) expressing pain or dissatisfaction of resentment. Synonyms: complaining(prenominal) (vs. uncomplaining), complaintive. Example: "A complaining boss."