Pronunciation: [lˈɛt nˈə͡ʊ] (IPA) 
The phrase "let know" is often used as a polite way of informing someone about something. The spelling of this phrase can be explained using the International Phonetic Alphabet (IPA). The first word "let" is spelled as /lɛt/ with the letter "e" pronounced as the short "e" sound. The second word "know" is spelled as /noʊ/ with a long "o" sound and the letter "w" being silent. Together, the phrase "let know" is pronounced as /lɛt noʊ/.
The phrase "let know" refers to the act of informing or notifying someone about something. It entails sharing information, news, or details with another individual or group, ensuring that they become aware of a particular matter or situation. "Let know" emphasizes the action of actively transmitting knowledge or updates to others, often to keep them informed, engage them in a conversation, or involve them in a decision-making process.
When someone "lets know," it typically implies a sense of responsibility or duty to keep others in the loop. It involves a conscious effort to convey information, opinions, or instructions, with the intention of ensuring that the recipient stays informed and gains access to information they might need.
"Let know" can occur through various means, including direct communication such as face-to-face conversation, phone calls, or emails. It can also involve indirect methods like written notices, announcements, or even public statements. The phrase denotes an active and deliberate act of dissemination, acknowledging that information needs to be shared and received to facilitate a better understanding, collaboration, or decision-making process.
In conclusion, "let know" is an expression that encompasses the action of informing, notifying, or sharing information with others to ensure they become aware or knowledgeable about a specific matter or event.
The phrase "let know" is a combination of the verb "let" and the noun "know".
The word "let" comes from the Old English verb "lǣtan", which means "to permit" or "to allow". It can be traced back to the Proto-Germanic word "lētaną" and the Proto-Indo-European root "*lēd-", which carries the meaning of "to leave" or "to let go".
On the other hand, "know" originates from the Old English verb "cnāwan", derived from the Proto-Germanic word "*knāwaną". This etymological root can be traced back to the Proto-Indo-European root "*ǵneh₃-" or "*ǵṇh₁-", meaning "to know" or "to perceive".
