Greatly vs Heavily

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

Greatly

Top 2,000 (common)B2adverb

Heavily

Top 2,000 (common)B1adverb
 GreatlyHeavily
Pronunciation🇬🇧 /["/ˈɡreɪtli/"]/🇺🇸 /["/ˈɡreɪtli/"]/🇬🇧 /["/ˈhevɪli/"]/🇺🇸 /["/ˈhevɪli/"]/
Meaninga lot or very muchA lot or to a great degree.
ExamplePeople's reaction to the film has varied greatly.The rain fell heavily all night, causing flooding in several areas.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 2,000 (common)
CEFR levelB2B1
Part of speechadverbadverb
Collocationsgreatly improve, greatly appreciate, greatly enhance, greatly affectheavily loaded, heavily armed, heavily criticized, heavily dependent, heavily influenced
Antonymsslightly, partially, minimallylightly, gently
Common mistakesUsing 'greatly' incorrectly with nouns instead of verbs or adjectives., Confusing 'greatly' with 'great' as an adjective., Overusing 'greatly' in informal settings.Used incorrectly with non-action verbs (e.g., saying 'heavily is happy')., Confused with 'hard' (e.g., saying 'heavily' when 'hard' is more suitable).
Usage notesUse '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 'heavily' to describe actions done with great intensity or amount. It's neutral, but can sound more formal in certain contexts, like writing.

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Greatly

Frequently asked questions: Greatly vs Heavily

What's the difference between Greatly and Heavily?

Greatly: a lot or very much Heavily: A lot or to a great degree.

Which is more advanced: Greatly and Heavily?

Greatly is the highest level, at B2, on the CEFR scale.

Are Greatly and Heavily the same CEFR level?

Greatly: B2, Heavily: B1 on the CEFR scale.

What part of speech are Greatly and Heavily?

Greatly: adverb, Heavily: adverb.

Can you show an example of each?

Greatly: People's reaction to the film has varied greatly. Heavily: The rain fell heavily all night, causing flooding in several areas.

Can I use Greatly and Heavily interchangeably?

Not always. Greatly and Heavily 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.

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