affluent /ˈæf.lu.ənt/adjective 4noun 2forms 3 adjective4 •Abounding in goods or riches; having a moderate level of material wealth.They were affluent, but aspired to true wealth.The Upper East Side is an affluent neighborhood in New York City. •Abundant; copious; plenteous.The shores are affluent in beauty, and incomparably lovely is the drive to the heights of Castel-a-Mare. — 1860 •(old-fashioned) Tributary. •(no longer used) Flowing to; flowing abundantly. noun2 •Someone who is wealthy.The affluents are most similar to the professional want-it-alls in their reasons for preferring specific hospitals and in their demographic characteristics. — 1994 •A stream or river flowing into a larger river or into a lake; a tributary stream; a tributary.Its sources are everywhere in pine-clad mountains and plateaus, but all of the affluents quickly descend into the desert valley below, through which the Gila winds its way westward to the Colorado. — 1895 formsaffluents · more affluent · most affluent