Cool MateLet you know vs Update
When to use each in English, with meaning, register, and examples.
Let you know
Top 1,000 (very common)
Update
Top 1,000 (very common)B1verb
| Let you know | Update | |
|---|---|---|
| Pronunciation | 🇬🇧 //lɛt jʊ nəʊ//🇺🇸 //lɛt jə noʊ// | 🇬🇧 /["/ˌʌpˈdeɪt/","/ˌʌpˈdeɪts/","/ˌʌpˈdeɪtɪd/","/ˌʌpˈdeɪtɪŋ/"]/🇺🇸 /["/ˌʌpˈdeɪt/","/ˌʌpˈdeɪts/","/ˌʌpˈdeɪtɪd/","/ˌʌpˈdeɪtɪŋ/"]/ |
| Meaning | To tell someone information later. | To make something new or better. |
| Example | I will let you know as soon as I have more information. | Please update the software to the latest version. |
| Register | Neutral | Neutral |
| How common | Top 1,000 (very common) | Top 1,000 (very common) |
| CEFR level | - | B1 |
| Part of speech | verb | |
| Collocations | let you know later, let you know soon, let you know when, let you know tomorrow | constantly, continually, continuously, try to, need to, on, to, with, constantly, continually, continuously, try to, need to, on, to, with |
| Antonyms | - | degrade, downgrade |
| Common mistakes | Using '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. | Confusing 'update' with 'upgrade', which means to improve or enhance something., Using 'updating' as a noun, instead of 'update'., Omitting the object when saying 'I will update' — it should be clear what is being updated. |
| Usage notes | Commonly used in informal speech to indicate that you'll inform someone about something. Suitable in both personal and professional contexts. | Use 'update' when talking about changing information to reflect new details. It's appropriate in both personal and professional contexts, but avoid using it in overly casual conversations. |
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Frequently asked questions: Let you know vs Update
What's the difference between Let you know and Update?
Let you know: To tell someone information later. Update: To make something new or better.
Can you show an example of each?
Let you know: I will let you know as soon as I have more information. Update: Please update the software to the latest version.
Can I use Let you know and Update interchangeably?
Not always. Let you know and Update 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.