To carry oneself in a depressed, lackadaisical manner; to give oneself up to low spirits; to pout, sulk.
To make spiritless and stupid.
A bottom feeder who "mopes" around a pornography studio hoping for his big break and often does bit parts in exchange for room and board and meager pay.
The act of moping
A person who is habitually gloomy, sullen or miserable; a grouch. A scowling person.