plummeting (?.)

• break
• cascade
• cataract
• cheapening
• chute
• collapse
• collapsing
• comedown
• crash
• cut
• debacle
• deciduous
• declension
• declination
• decline
• declining
• declivitous
• decurrent
• deflation
• defluxion
• depreciation
• descendant
• descending
• descension
• descent
• devaluation
• dive
• down
• down-reaching
• downbend
• downcome
• downcoming
• downcurve
• downfall
• downfalling
• downflow
• downgoing
• downgrade
• downhill
• downpour
• downrush
• downsinking
• downtrend
• downturn
• downward
• downward trend
• drooping
• drop
• dropping
• fall
• falling
• gravitation
• inclination
• lowering
• markdown
• nose dive
• on the descendant
• on the downgrade
• plummet
• plunge
• plunging
• pounce
• price cut
• price fall
• price reduction
• rapids
• reduction
• sag
• sagging
• setting
• sinking
• slash
• slump
• stoop
• submerging
• subsiding
• swoop
• tottering
• tumbledown
• waterfall