bottom drops out
phrase1
Synonym of bottom falls out (“something fails or collapses”).
- "You and I are not wanted here, Inspector," he whispered. "The bottom's dropped out of the case," and they slipped away together.1923, Ernest Bramah [pseudonym; Ernest Brammah Smith], “(please specify the page)”, in The Eyes of Max Carrados, London: Grant Richards, →OCLC: