let it be known

let it be known (third-person singular simple present lets it be known, present participle letting it be known, simple past and past participle let it be known)

1. (formal) To ensure that others are aware, even if not telling them directly.

• “let it be known”, in Cambridge English Dictionary, Cambridge, Cambridgeshire: Cambridge University Press, 1999–present.
• “let it be known”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.
• “let it be known that” (US) / “let it be known that” (UK) in Macmillan English Dictionary.
• “let it be known make it known that” in Longman Dictionary of Contemporary English, Longman.