Synonyms for influx in Free Thesaurus. Antonyms for influx. 10 synonyms for influx: arrival, flow, rush, invasion, convergence, inflow, incursion, inundation, inrush. Synonyms for efflux include discharge, effluence, emanation, effluxion, outflow, outpouring, flow, gush, issue and rush. Find more similar words at wordhippo.com!

Recent Examples on the Web Lines during mealtimes sometimes stretch blocks, for social distancing but also because of an influx of new faces.—Early inaction left the U.S.