Complain About is a term that can be used to describe a variety of different actions. The crossword solutions for this term are RAIL, MOAN, BEMOAN, LAMENT, and PICKAT. RAIL is an action that involves expressing one's dissatisfaction in a loud and angry manner. MOAN is a low, prolonged sound of pain or dissatisfaction. BEMOAN is to express sorrow or regret for something. LAMENT is to express grief or sorrow for something. PICKAT is to find fault with or criticize someone or something. All of these words describe different ways of expressing dissatisfaction or sorrow about something.