beyond a shadow of a doubt
Meaning: Something is true "beyond a shadow of a doubt" if there is no possibility at all that it isn't true.
For example:
- Are you absolutely sure, beyond a shadow of a doubt, that he is guilty of the crime?
- A few years ago a great many scientists said they were sure, beyond a shadow of a doubt, that there was no such thing as global warming. Were they right?
Quick Quiz:
Doctors say they are sure, beyond a shadow of a doubt, that
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