open-and-shut case
noun/ˌəʊpən ən ʃʌt ˈkeɪs/
/ˌəʊpən ən ʃʌt ˈkeɪs/
- a legal case or other matter that is easy to decide or solve
- The murder was an open-and-shut case.
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open-and-shut case
Definition of open-and-shut case noun from the Oxford Advanced Learner's Dictionary