Furthermore vs I'll tell you what else
When to use each in English, with meaning, register, and examples.
Furthermore
FormalTop 2,000 (common)B2adverb
I'll tell you what else
InformalTop 5,000 (fairly common)
Most formal: FurthermoreMost common: Furthermore
| Furthermore | I'll tell you what else | |
|---|---|---|
| Pronunciation | 🇬🇧 /["/ˌfɜːðəˈmɔː(r)/"]/🇺🇸 /["/ˌfɜːrðərˈmɔːr/"]/ | 🇬🇧 //aɪl tɛl jʊ wɒt ɛls//🇺🇸 //aɪl tɛl jʊ wʌt ɛls// |
| Meaning | Also; in addition to what was said before. | I will share more information. |
| Example | He said he had not discussed the matter with her. Furthermore, he had not even contacted her. | I'll tell you what else I found during my research. |
| Register | Formal | Informal |
| How common | Top 2,000 (common) | Top 5,000 (fairly common) |
| CEFR level | B2 | - |
| Part of speech | adverb | |
| Collocations | furthermore, it is important, furthermore, we should consider, furthermore, studies show | tell you what else happened, tell you what else to consider, tell you what else we need |
| Antonyms | however, nevertheless | - |
| Common mistakes | Using 'furthermore' in informal speech too often., Confusing 'furthermore' with 'besides' which can have a different tone., Placing a comma before 'furthermore' incorrectly in sentence structure. | Used too formally in business contexts., Confused with similar phrases like 'Additionally' or 'Moreover'. |
| Usage notes | Use 'furthermore' to add information in formal writing or speech. It's less common in casual conversation. Avoid starting sentences with it in informal contexts. | This phrase is often used in conversations to introduce an additional point or idea, making it suitable for casual settings. It may not be appropriate in formal written communication. |
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Frequently asked questions: Furthermore vs I'll tell you what else
What's the difference between Furthermore and I'll tell you what else?
Furthermore: Also; in addition to what was said before. I'll tell you what else: I will share more information.
Which is more formal: Furthermore and I'll tell you what else?
Furthermore is the most formal of these.
Which is more common: Furthermore and I'll tell you what else?
Furthermore is the most common in everyday English.
Can you show an example of each?
Furthermore: He said he had not discussed the matter with her. Furthermore, he had not even contacted her. I'll tell you what else: I'll tell you what else I found during my research.
Can I use Furthermore and I'll tell you what else interchangeably?
Not always. Furthermore and I'll tell you what 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.