Antonyms of noun inflow

1 sense of inflow

Sense 1
inflow, influx -- (the process of flowing in)
       Antonym of outflow (Sense 2)
      => outflow, effluence, efflux -- (the process of flowing out)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun inflow

1 sense of inflow

Sense 1
inflow, influx -- (the process of flowing in)
       => flow -- (any uninterrupted stream or discharge)