slump

/slʌmp/
verb
  1. To fall or sink down heavily, often because of tiredness or lack of strength.
    • After running the marathon, she slumped onto the grass, exhausted.
    • The old building's roof slumped under the weight of the snow.
    • He slumped in his chair and closed his eyes after a long day at work.
  2. To decrease suddenly and significantly in value, amount, or performance.
    • Stock prices slumped after the company announced lower profits.
    • Sales slumped during the winter months, worrying the store owner.
    • The team's performance slumped in the second half of the season.
Antonyms
noun
  1. A sudden and significant fall in value, amount, or performance.
    • A slump in tourism hurt the local economy.
    • The baseball player is in a hitting slump and hasn't gotten a hit in ten games.
    • The housing market experienced a severe slump last year.
  2. A period of sitting or standing in a drooping, tired position.
    • He sat with a slump in his shoulders, looking defeated.
    • Her posture had a permanent slump from years of hunching over a desk.
    • The tired child fell into a slump on the couch.