Synonyms of cave in

Noun

1. cave in, subsidence, collapse

usage: the sudden collapse of something into a hollow beneath it

Verb

1. collapse, fall in, cave in, give, give way, break, founder, change

usage: break down, literally or metaphorically; "The wall collapsed"; "The business collapsed"; "The dam broke"; "The roof collapsed"; "The wall gave in"; "The roof finally gave under the weight of the ice"