let it be known/make it known that...
let it be known
1. To make something public knowledge. She's letting it be known that she is single and ready to start dating again.
2. An expression used to assert that something is true, especially in the face of criticism or distrust. I realize that many people here believe that my company has exploited its employees, but let it be known that we have never in our 50-year history done anything that would knowingly cause harm to our workers.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
let it be ˈknown/make it ˈknown that...(formal) make sure that people are informed about something, especially by getting somebody else to tell them: The President has let it be known that he does not intend to run for election again.
Farlex Partner Idioms Dictionary © Farlex 2017