Mooch/muːtʃ/ Definition 1 of 2Pro Tip 1/3Negative Connotation Using 'mooch' often implies that the behavior is unwelcome or annoying. Don't mooch off me, it's starting to irritate me. Pro Tip 2/3Casual Context Best used in casual conversations, 'mooch' might be too informal for professional settings. At the family BBQ, my uncle was mooching beers again. Pro Tip 3/3Dependent Situation Implies relying heavily on someone else for resources or help. Ever since he lost his job, he's been mooching off his parents.