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Related to collapse: lung collapse
collapse into (something)
1. To physically drop or fall into something. Once Sarah crossed the finish line, she collapsed into her boyfriend's arms. After I got home from a 12-hour day at work, I collapsed into a comfy chair and dozed off.
2. To abruptly enter a negative state, such as a depression. After I lost my job, I collapsed into a serious depression. Economists have been warning that the country could collapse into another recession if preventative measures are not taken.
collapse under the weight of (someone or something)
To fall down after supporting someone or something that is too heavy. The roof collapsed under the weight of all that snow.
collapse into something
1. Lit. to fall down into something with suddenness, as if out of energy. She was so tired, she collapsed into the chair. Juan collapsed into a chair and fell fast asleep.
2. Fig. [for someone] to fall into a particular kind of despair. The poor man collapsed into a deep depression. Scott collapsed into his own personal brand of grieving.
collapse under someone or something
to cave in under the weight of someone or something. The grandstand collapsed under the weight of the spectators. The bridge collapsed from the force of the flood.
collapse, fall, etc. in/into a ˈheapfall down heavily and not move: He collapsed in a heap on the floor.
See also: heap