Cool MateGreatly vs Substantially
When to use each in English, with meaning, register, and examples.
Greatly
Top 2,000 (common)B2adverb
Substantially
FormalTop 2,000 (common)C1adverb
Most formal: Substantially
| Greatly | Substantially | |
|---|---|---|
| Pronunciation | 🇬🇧 /["/ˈɡreɪtli/"]/🇺🇸 /["/ˈɡreɪtli/"]/ | 🇬🇧 /["/səbˈstænʃəli/"]/🇺🇸 /["/səbˈstænʃəli/"]/ |
| Meaning | a lot or very much | A lot or greatly; a significant amount. |
| Example | People's reaction to the film has varied greatly. | The costs have increased substantially. |
| Register | Neutral | Formal |
| How common | Top 2,000 (common) | Top 2,000 (common) |
| CEFR level | B2 | C1 |
| Part of speech | adverb | adverb |
| Collocations | greatly improve, greatly appreciate, greatly enhance, greatly affect | substantially increase, substantially improve, substantially higher, substantially lower |
| Antonyms | slightly, partially, minimally | slightly, marginally |
| Common mistakes | Using 'greatly' incorrectly with nouns instead of verbs or adjectives., Confusing 'greatly' with 'great' as an adjective., Overusing 'greatly' in informal settings. | 'Substantial' is confused with 'substantially.', Using 'substantially' in casual contexts incorrectly., Incorrectly using 'substantially' as an adjective. |
| Usage notes | Use 'greatly' to emphasize the extent of a feeling, action, or quality, especially in formal contexts. Avoid in casual conversations where simpler words like 'really' might fit better. | Use 'substantially' in formal writing or discussions. It's appropriate for academic, business, or legal contexts but may sound overly complex in casual conversations. |
Frequently asked questions: Greatly vs Substantially
What's the difference between Greatly and Substantially?
Greatly: a lot or very much Substantially: A lot or greatly; a significant amount.
Which is more formal: Greatly and Substantially?
Substantially is the most formal of these.
Are Greatly and Substantially the same CEFR level?
Greatly: B2, Substantially: C1 on the CEFR scale.
Can I use Greatly and Substantially interchangeably?
Not always. Greatly and Substantially 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.