"slump" in the noun sense
1. slump, slack, drop-off, falloff, falling off
a noticeable deterioration in performance or quality
"the team went into a slump"
"a gradual slack in output"
"a drop-off in attendance"
"a falloff in quality"
2. depression, slump, economic crisis
a long-term economic state characterized by unemployment and low prices and low levels of trade and investment
"slump" in the verb sense
1. slump, slouch
assume a drooping posture or carriage
2. slump, slide down, sink
fall or sink heavily
"He slumped onto the couch"
"My spirits sank"
3. slump, fall off, sink
fall heavily or suddenly decline markedly
"The real estate market fell off"
4. decline, slump, correct
go down in value
"the stock market corrected"
"prices slumped"
Source: WordNet® (An amazing lexical database of English)
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