poobah /ˈpuːbɑː/noun 3forms 1phrases 1 noun3 •A leader or other important person.‘I said pooh-pooh,’ Duxmann Pooh Bah said. — 1982 •A pompous, self-important person. •A person who holds multiple offices or positions of power at the same time. formspoobahs Phrases with poobah grand poobahA person who is important or high-ranking.