Synonyms of 'open-and-shut'
straightforwardDictionary, simple, obvious
It's an open-and-shut case - the hospital's at fault.
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Something that is clear-cut is easy to recognize and quite distinct.
He won a clear-cut victory in yesterday's election.
If something is obvious, it is easy to see or understand.
It's obvious that he doesn't like me.
much in evidence
clear as a bell
staring you in the face (informal)
right under your nose (informal)
sticking out a mile (informal)
plain as the nose on your face (informal)
Thesaurus for open-and-shut from the Collins English Thesaurus
If you describe a dispute or a legal case as open-and-shut , you mean that is easily decided or solved because the facts are very clear .