The phrase "lets it be known" can be synonymous with expressions like "declares," "announces," "broadcasts," or "proclaims." These phrases indicate that someone is publicly sharing information or their thoughts on a matter. Other synonyms include "reveals," "discloses," and "shares." The use of these terms implies a deliberate and intentional effort to communicate information to others. Additionally, "lets it be known" could also be thought of as a variant of "make it known," which can be seen as synonymous with "publicize," "spread the word," or "disseminate." Ultimately, all these phrases intend to convey clear and direct communication of a message to others.