Let you know vs Notify

When to use each in English, with meaning, register, and examples.

Let you know

Top 1,000 (very common)

Notify

Top 2,000 (common)C1verb
Most common: Let you know
 Let you knowNotify
Pronunciation🇬🇧 //lɛt jʊ nəʊ//🇺🇸 //lɛt jə noʊ//🇬🇧 /["/ˈnəʊtɪfaɪ/","/ˈnəʊtɪfaɪz/","/ˈnəʊtɪfaɪd/","/ˈnəʊtɪfaɪɪŋ/"]/🇺🇸 /["/ˈnəʊtɪfaɪ/","/ˈnəʊtɪfaɪz/","/ˈnəʊtɪfaɪd/","/ˈnəʊtɪfaɪɪŋ/"]/
MeaningTo tell someone information later.to tell someone about something
ExampleI will let you know as soon as I have more information.Competition winners will be notified by post.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)
CEFR level-C1
Part of speechverb
Collocationslet you know later, let you know soon, let you know when, let you know tomorrowforthwith, immediately, promptly, be obliged to, be required to, must, of, to
Antonyms-ignore, neglect, overlook
Common mistakesUsing 'let you know' instead of 'let me know' when speaking about oneself., Confusing 'let you know' with 'let you see' – they have different meanings., Forgetting to follow up on the promise to inform someone.Using 'notify' without an object (e.g., saying 'I will notify' instead of 'I will notify you')., Confusing 'notify' with 'inform' — while similar, 'notify' implies a more formal notification., Mixing up prepositions (e.g., saying 'notify with' instead of 'notify about')
Usage notesCommonly used in informal speech to indicate that you'll inform someone about something. Suitable in both personal and professional contexts.Use 'notify' in situations where you are formally informing someone, like in business or official contexts. Avoid in casual conversations.

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Let you know
Notify

Frequently asked questions: Let you know vs Notify

What's the difference between Let you know and Notify?

Let you know: To tell someone information later. Notify: to tell someone about something

Which is more common: Let you know and Notify?

Let you know is the most common in everyday English.

Can you show an example of each?

Let you know: I will let you know as soon as I have more information. Notify: Competition winners will be notified by post.

Can I use Let you know and Notify interchangeably?

Not always. Let you know and Notify are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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