Tra từ slump - Từ điển Oxford Advanced Learner 8th

slump [slump slumps slumped slumping] verb, noun BrE [slʌmp] NAmE [slʌmp]
verb
1. intransitive to fall in price, value, number, etc, suddenly and by a large amount
Syn: ↑drop
•Sales have slumped this year.
•~ by sth Profits slumped by over 50%.
•~ (from sth) (to sth) The paper's circulation has slumped to 90 000.
2. intransitive + adv./prep. to sit or fall down heavily
•The old man slumped down in his chair.
•She slumped to her knees.
Verb forms:

Word Origin:
late 17th cent. (in the sense ‘fall into a bog’): probably imitative and related to Norwegian slumpe ‘to fall’.

Thesaurus:
slump verb I (business)
•Profits slumped by over 50%.
fall • • drop • • decline • |especially business plunge • • plummet • • tumble • • sink •
Opp: jump, Opp: surge
slump/fall/drop/decline/plunge/plummet/tumble/sink by 100, 25%, a half, etc.
slump/fall/drop/decline/plunge/plummet/tumble/sink from 1 500 to 1 000
prices/profits/sales slump/fall/drop/decline/plunge/plummet/tumble/sink
slump/plunge dramatically/suddenly

Example Bank:
•Bart was slumped in front of the TV.
•He lay slumped over the steering wheel.
•He slumped against the wall.
•He slumped down into a chair.
•He was found slumped in a pool of blood by security guards.
•I walked in and saw him slumped over.
•Oil prices have slumped quite badly in recent months.
•Profits slumped by 70 per cent.
•Shares in the company slumped from £2.75 to £1.54.
•She slumped back in her seat.
•She slumped dejectedly over the wheel.
•She slumped onto the bed.
•She slumped to the floor.
•She was sitting with her head slumped forward.

noun
1. ~ (in sth) a sudden fall in sales, prices, the value of sth, etc.
Syn: ↑decline
•a slump in profits
•This is the worst slump in property prices since the 1990s.
2. a period when a country's economy or a business is doing very badly
•the slump of the 1930s
•Housing sales are finally coming out of a three-month slump.
•The toy industry is in a slump.
compare ↑boom _n. (¹)

Word Origin:
late 17th cent. (in the sense ‘fall into a bog’): probably imitative and related to Norwegian slumpe ‘to fall’.

Example Bank:
•Investors were badly hit by the slump in property prices.
•The economy is in a prolonged slump.
•The industry is sinking into a slump.
•The share-price slump has wiped about $10 billion off the company's value.
•a severe slump in much-needed foreign investment
•The present slump has hit manufacturing hard.
•The recession led to a slump in consumer spending.
•This is the worst slump in property prices since the 1980s.
•a downturn/slump in demand/trade/business/profits.