have it on good authority

have it on good authority

to believe that certain information is true because it came from a person or document you can trust I have it on good authority that their business is not doing well.
See also: authority, good, have, on

have it on good authority

to believe that a piece of information is true because you trust the person who told you (often + that ) I have it on good authority that we're about to be given a pay increase.
See also: authority, good, have, on
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