defluxion (?.)
- affluence
- afflux
- affluxion
- cascade
- cataract
- chute
- collapse
- comedown
- concourse
- confluence
- conflux
- course
- crash
- crosscurrent
- current
- debacle
- declension
- declination
- descending
- descension
- descent
- discharge
- down
- downbend
- downcome
- downcurve
- downfall
- downflow
- downgrade
- downpour
- downrush
- downtrend
- downturn
- downward trend
- drain
- drainage
- drift
- driftage
- drop
- dropping
- effluence
- efflux
- effluxion
- effusion
- exhalation
- exhaust
- fall
- falling
- flow
- flowing
- flowoff
- fluency
- flux
- gravitation
- gush
- inclination
- inflow
- mill run
- millrace
- onrush
- onward course
- outfall
- outflow
- outflowing
- outpour
- outpouring
- plummeting
- pounce
- race
- rapids
- run
- runoff
- rush
- set
- spate
- stoop
- stream
- surge
- swoop
- tide
- trend
- undercurrent
- undertow
- water flow
- waterfall