on the case
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English[edit]
Etymology[edit]
From the idea of a detective trying to solve a crime or mystery.
Prepositional phrase[edit]
- (informal) Actively working on something.
- Synonym: on it
- Near-synonym: on the job
Further reading[edit]
- “on the case” (US) / “on the case” (UK) in Macmillan English Dictionary.
- “be on the case”, in Cambridge English Dictionary, Cambridge, Cambridgeshire: Cambridge University Press, 1999–present.
- “be on the case” in Longman Dictionary of Contemporary English, Longman.