| Noun | 1. | rich person - a person who possesses great material wealthaffluent - an affluent person; a person who is financially well off; "the so-called emerging affluents" fat cat - a wealthy and privileged person plutocrat - someone who exercises power by virtue of wealth millionaire - a person whose material wealth is valued at more than a million dollars billionaire - a very rich person whose material wealth is valued at more than a billion dollars | |