slump

verb

The economy is in a slump.

意味（1）

(intransitive) To collapse heavily or helplessly.

Exhausted, he slumped down onto the sofa.

意味（2）

(intransitive) To decline or fall off in activity or performance.

Real estate prices slumped during the recession.

意味（3）

(intransitive) To slouch or droop.

意味（4）

(transitive) To lump; to throw together messily.

These different groups […] are exclusively slumped together under that sense.

意味（5）

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

The latter walk on a bottomless quag, into which unawares they may slump.

意味（6）

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