The act of moping

(archaic) A dull, spiritless person.

(pornography industry) 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.

(intransitive) To carry oneself in a depressed, lackadaisical manner; to give oneself up to low spirits; to pout, sulk.

(transitive) To make spiritless and stupid.