slumping

/S L AH1 M P IH0 NG/
verb
  1. 1

    To collapse heavily or helplessly.

    โ€œExhausted, he slumped down onto the sofa.โ€

  2. 2

    To decline or fall off in activity or performance.

    โ€œReal estate prices slumped during the recession.โ€

  3. 3

    To slouch or droop.

  4. 4

    To lump; to throw together messily.

  5. 5

    To fall or sink suddenly through or in, when walking on a surface, as on thawing snow or ice, a bog, etc.

  6. 6

    (slang) To cause to collapse; to hit hard; to render unsconscious; to kill.

noun
  1. 1

    The result of a slumping movement, like that of a mountain

Synonyms

adjective
  1. 1

    Something that makes a slumping voice

Source: https://en.wiktionary.org/wiki/slump, https://en.wiktionary.org/wiki/slumping