Additionally vs Let me tell you something else

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

Additionally

FormalTop 2,000 (common)B2adverb

Let me tell you something else

Top 3,000 (common)
Most formal: AdditionallyMost common: Additionally
 AdditionallyLet me tell you something else
Pronunciation🇬🇧 /["/əˈdɪʃənəli/"]/🇺🇸 /["/əˈdɪʃənəli/"]/🇬🇧 //lɛt miː tɛl jʊ ˈsʌmθɪŋ ɛls//🇺🇸 //lɛt mi tɛl ju ˈsʌmθɪŋ ɛls//
Meaningalso; in additionI want to share more information.
ExampleAdditionally, the bus service will run on Sundays, every two hours.Let me tell you something else about the project.
RegisterFormalNeutral
How commonTop 2,000 (common)Top 3,000 (common)
CEFR levelB2-
Part of speechadverb
Collocationsadditionally, we should consider, additionally, the study found, additionally, there is evidencelet me explain something else, let me show you something else, let me say something else
Antonymsonly, exclusively, solelyLet me keep this to myself, I won't tell you anything, Let me stay silent
Common mistakesUsing 'additionally' to start a sentence in too informal a context., Confusing with 'also' in terms of formality., Overusing in casual writing; it sounds too formal.Omitting 'let me' and starting with 'tell you something else'., Using in very formal writing., Forgetting to adjust the tone when speaking.
Usage notesUsed to introduce more information or to add another point, primarily in formal writing or presentations. Not common in casual conversations.Use this phrase to introduce additional information. Avoid overly formal contexts.

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Let me tell you something else

Frequently asked questions: Additionally vs Let me tell you something else

What's the difference between Additionally and Let me tell you something else?

Additionally: also; in addition Let me tell you something else: I want to share more information.

Which is more formal: Additionally and Let me tell you something else?

Additionally is the most formal of these.

Which is more common: Additionally and Let me tell you something else?

Additionally is the most common in everyday English.

Can you show an example of each?

Additionally: Additionally, the bus service will run on Sundays, every two hours. Let me tell you something else: Let me tell you something else about the project.

Can I use Additionally and Let me tell you something else interchangeably?

Not always. Additionally and Let me tell you something else 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.