I could let her know vs Inform

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

I could let her know

Top 2,000 (common)

Inform

Top 2,000 (common)B2verb
 I could let her knowInform
Pronunciation🇬🇧 //aɪ kəd lɛt hɜːr nəʊ//🇺🇸 //aɪ kəd lɛt hɜr noʊ//🇬🇧 /["/ɪnˈfɔːm/","/ɪnˈfɔːmz/","/ɪnˈfɔːmd/","/ɪnˈfɔːmɪŋ/"]/🇺🇸 /["/ɪnˈfɔːrm/","/ɪnˈfɔːrmz/","/ɪnˈfɔːrmd/","/ɪnˈfɔːrmɪŋ/"]/
MeaningI can inform her.To tell someone something important or give them information.
ExampleI could let her know about the meeting time.Please inform me of any updates regarding the project timeline.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 2,000 (common)
CEFR level-B2
Part of speechverb
Collocationslet someone know, let me know, let him knowmerely, simply, regularly, be pleased to, regret to, be required to, about, of
Antonyms-conceal, withhold, hide
Common mistakesOmitting 'let' as in 'I could her know.', Using incorrect object form, e.g., 'I could let she know.', Confusing with 'let know' without an object.Confused with 'informant' — 'inform' is a verb, not a noun., Using 'inform' without an object — always say who you are informing., Misusing tenses — ensure correct form like 'informed' for the past.
Usage notesUse in both spoken and written contexts to indicate informing someone. Often casual but can be formal.Use 'inform' in formal contexts, like writing or business. Avoid in casual conversations where 'tell' is more appropriate.

See it in real clips

I could let her know
Inform

Frequently asked questions: I could let her know vs Inform

What's the difference between I could let her know and Inform?

I could let her know: I can inform her. Inform: To tell someone something important or give them information.

Can you show an example of each?

I could let her know: I could let her know about the meeting time. Inform: Please inform me of any updates regarding the project timeline.

Can I use I could let her know and Inform interchangeably?

Not always. I could let her know and Inform 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.

Related comparisons