ˈtub-ˌthumping adjective [only before noun] British English informal trying to persuade people about your opinions in a loud and forceful way:
He is still addressing rallies in his usual tub-thumping, arrogant way.—tub-thumping noun [uncountable]—tub-thumper noun [countable] [TahlilGaran] Dictionary of Contemporary English ▲