THESAURUS
undertow
affluence, afflux, affluxion, concourse, confluence, conflux, coral heads, course, crosscurrent, current, defluxion, downflow, downpour, drift, driftage, flow, flowing, fluency, flux, gush, inflow, ironbound coast, ledges, lee shore, mill run, millrace, onrush, onward course, outflow, pitfall, quicksands, race, rockbound coast, rocks, run, rush, sandbank, sandbar, sands, set, shallows, shoals, spate, stream, surge, tide, trend, undercurrent, water flow