Nouveau riche (French for "new rich"), or new money refers to persons who acquire wealth within their generation. It is generally used to emphasize that the persons were previously part of a lower economic or social class, and that the acquisition of wealth has provided the ability to do or to have things that were previously out of their reach
[ 'nü, chiefly British ] (adjective.) before 12th century. Middle English, from Old English nIwe; akin to Old High German niuwi new, Latin novus, Greek neos.