← BackshareGuessmuckamuck/ˈmʌkəˌmʌk/nounAn important or self-important person, especially in a group or organization.The company muckamucks flew in for the big meeting.He acts like a muckamuck, but he's just a junior manager.All the local muckamucks attended the charity gala.SynonymsbigwigdignitarymagnatevipAntonymsnobody