Etymology: (1670–80; orig., to sink into a bog or mud; perh. imit.)
Definition of 'slump'
Princeton's WordNet
1. (noun)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. (verb)depression, slump, economic crisis a long-term economic state characterized by unemployment and low prices and low levels of trade and investment
3. (verb)slump, slouch assume a drooping posture or carriage
4. (verb)slump, slide down, sink fall or sink heavily "He slumped onto the couch"; "My spirits sank"
5. (verb)slump, fall off, sink fall heavily or suddenly; decline markedly "The real estate market fell off"
6. (verb)decline, slump, correct go down in value "the stock market corrected"; "prices slumped"
5. (verb)slump to fall or sink suddenly through or in, when walking on a surface, as on thawingsnow or ice, partly frozen ground, a bog, etc., not strong enough to bear the person