Synonyms and related words :
baptism, breaking water, burial, cadence, catenary, concavity, crash dive, de-escalation, debasement, decline, decurrence, degradation, demotion, depression, descent, detrusion, diminution, dip, dipping, displacement, dive, dousing, draft, droop, duck, ducking, dunking, engulfment, hauling down, hollowness, immergence, immersion, inundation, lapse, lowering, reduction, running dive, sag, sinkage, sinking, slump, souse, sousing, stationary dive, submersion, subsidence, surfacing, swag, thrusting under