The Vietnamese word "vụ lợi" is an adjective that describes someone or something that is self-serving or motivated by personal gain. It often has a negative connotation, implying that a person is looking out only for their own interests, often at the expense of others.
While "vụ lợi" primarily refers to self-seeking behavior, in different contexts, it can also imply opportunism, where someone takes advantage of a situation for personal benefit.