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to cave in

to cave in

22 3.7
Suddenly fall inward because its sides or top become weak, for example a tunnel
  • phrasal verb
  • /keɪv ɪn/
translation icon : desplomarse
  • After years of neglect, the mine's entrance finally caved in, blocking access completely.
  • roof caved in
  • ceiling caved in
  • wall caved in

So the American Heart Association is caving in on low carbohydrate diets.

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Examples

  • Under the stress of constant deadlines, she felt like her resolve might cave in soon.

  • Apparently due to faulty engineering, the entire building flooded and half the ceiling caved in.

  • Take them from the top, otherwise the whole thing will cave in on us.

  • "Hurry up before the whole thing caves in," he said.

    Fiction book (1997)
  • Do you want the roof to cave in?

  • I can save the city... but this entire network of tunnels is going to cave in.

  • The entire roof might cave in, and they would be buried alive.

    Fiction book (1993)
  • As Ray came close, he could see that the house's bottom floor was caved in.

    Fiction book (1994)
  • The greater part of the roof had caved in and lay on the floor of the second story.

    Fiction book (1998)
  • The house looked as though at any moment it might cave in, suddenly and soundlessly.

    Fiction book (2002)

Synonyms

to give
vsto cave in
3.5

To stop being strong and bend or break under pressure

is the sudden total failure rather than general yielding or bending
to collapse
vsto cave in
579 3.9

To fall down suddenly, for example when a person faints or a building breaks

is the sudden failure that can be physical or metaphorical
to crumble
vsto cave in
177 3.4

To break into small pieces or become weaker and collapse

is sudden failure rather than a slow breakdown over time
to cave
vsto cave in
39 3.5

To collapse inward under pressure

is broader sudden failure not limited to inward yielding
to implode
vsto cave in
35 6.7

Collapse inward suddenly because of strong outside pressure

is general sudden failure without requiring an inward blast
to give way
vsto cave in
35 4.2

Break or fail because of pressure

is the sudden form of yielding that happens all at once
to fall in
vsto cave in
30 4.4

To collapse inward, as a roof or organization breaking down

is used more widely both for objects and abstract situations
to crumple
vsto cave in
22 3.9

Suddenly fall down because something is weak or hit hard

is sudden giving up or structural failure, not only physical dropping
to founder
vsto cave in
5 6.8

To fail completely because of problems with plans or projects

is sudden structural or personal failure, not only project failure
to begin to crumble
vsto cave in
4 4.0

Start to break into pieces or stop working well

is a sudden event, not an initial slow deterioration
to fall apart like a house of cards
vsto cave in
  • Informal
6.5

Suddenly fail completely because it is weak or badly built

is sudden failure in many contexts, not only weak constructions

Antonyms

1.0

To be or put something in an upright position

22 5.1

Keep trying to do something even when it is hard

How Complete

to implode
35 6.7
to cave in
22 3.7
to collapse
579 3.9
to give way
35 4.2
to sag
19 2.8
to crack
311 1.0

Surface Forms

cave in infinitive
caved in past
caved in past participle
caving in present participle
caves in third person singular

Morphology

cave + in

The meaning 'to yield or submit' is directly derived from combining 'cave' (to give up resistance) with the directional/into-state sense of 'in' — together signalling moving into a state of collapse or submission. This compositional pattern parallels verbs like 'give in' and is likely understandable to a B1 learner who knows the constituent meanings.

Etymology

Cave in comes from the image of a cave or a weak roof suddenly falling down into the space below. That's why it means 'to collapse' or fall down.