let someone know

USAGE SUMMARY

The phrase "let someone know" is correct and usable in written English.
You can use it when you want to inform someone or ask someone to inform another person about something. Example: "Please let me know if you can attend the meeting tomorrow."

✓ Grammatically correct

News & Media

Academia

Wiki

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

It isn't easy to be so real and let someone know you are interested without knowing how they feel first.

HuffPost

Let someone know where you are.

The Guardian

How do I let someone know they're special?

Columbia University

Let someone know about the predicament so it won't happen in the future?

The New York Times

Is there any way to let someone know that they need to launder their clothes?

The New York Times

Always let someone know where you are going and when you plan to return.

The Guardian - Travel

Just remember your mobile and first aid kit, and let someone know your whereabouts.

The Guardian - Travel

When I asked if he'd let someone know about me, to contact me, he reacted in mock horror.

The New York Times

Above all, he stressed to Kivon that he should let someone know if he thought he'd received a head injury.

The New Yorker

Let someone know where you'll be going.

TechCrunch

Mother Rosalind Hodgkiss appealed for her to "let someone know you are safe".

BBC

Expert writing Tips

Best practice

When using "let someone know" in professional contexts, consider whether a more formal alternative like "inform" or "notify" might be more appropriate.

Common error

Avoid using "let someone know" repeatedly in formal reports or academic papers. Opt for more precise and professional alternatives like "inform", "notify", or "advise" to maintain a consistent tone.

Linguistic Context

The phrase "let someone know" functions primarily as a phrasal verb used to request or offer information. As Ludwig AI confirms, it's a common way to instruct or suggest that information should be conveyed to someone. Examples from Ludwig show its versatility in various contexts.

Expression frequency: Very common

Frequent in

News & Media

42%

Wiki

33%

Academia

13%

Less common in

Science

4%

Formal & Business

4%

Reference

4%

Ludwig's WRAP-UP

In summary, "let someone know" is a grammatically sound and frequently used phrasal verb that serves the purpose of conveying or requesting information. As Ludwig AI indicates, its usage is broad, spanning from informal conversations to news reports. While it is generally acceptable, more formal alternatives may be preferable in professional or academic contexts. Its high frequency across diverse sources underscores its utility in everyday communication.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

inform someone

A more formal and direct way of saying "let someone know".

notify someone

Similar to "inform", but often used in more official or procedural contexts.

advise someone

Suggests a more consultative or informative approach.

tell someone

A simpler and more general alternative.

make someone aware

Focuses on ensuring someone has knowledge of something.

keep someone in the loop

Implies ongoing communication and updates.

give someone a heads-up

Suggests a warning or advance notice.

bring something to someone's attention

More formal and emphasizes importance of the information.

communicate to someone

A broad term encompassing various methods of conveying information.

apprise someone of

A highly formal and somewhat archaic alternative.

FAQs

What can I say instead of "let someone know"?

You can use alternatives like "inform someone", "notify someone", or "tell someone" depending on the context.

How do I use "let someone know" in a sentence?

"Let someone know" is generally followed by a clause indicating the information to be conveyed. For example, "Let me know if you can attend the meeting" or "Always let someone know where you are going."

Is it correct to say "let me know" or "let I know"?

The correct phrase is "let me know". "Me" is the object pronoun in this construction. The phrase "let I know" is grammatically incorrect.

When is it appropriate to use "let someone know" versus "inform someone"?

"Let someone know" is generally more informal than "inform someone". Use "let someone know" in casual conversations and informal writing, while "inform someone" is more suitable for professional or formal contexts.