noun a noticeable deterioration in performance or quality.
— synonyms: slack, drop-off, falloff, falling_off
noun a long-term economic state characterized by unemployment and low prices and low levels of trade and investment.
— synonyms: depression, economic_crisis
verb assume a drooping posture or carriage.
— synonyms: slouch
verb fall or sink heavily.
— synonyms: slide_down, sink
verb fall heavily or suddenly.
— synonyms: fall_off, sink
verb go down in value.
— synonyms: decline, correct
Examples
“Exhausted, he slumped down onto the sofa.”
“Real estate prices slumped during the recession.”