collapsing
col-laps-ing
verb
Falling down or giving way suddenly, often due to weakness or pressure.
"The old bridge was collapsing under the weight."
noun
The act or process of something suddenly falling down or failing completely.
"We heard the collapsing of the ceiling above us."
Thesaurus
Synonyms: collapse, crack up, crock up, crack, break up, crash, prostration, crumple, tumble, crumble, break down, give