Considerably vs Greatly

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

Considerably

Top 1,000 (very common)B2adverb

Greatly

Top 2,000 (common)B2adverb
Most common: Considerably
 ConsiderablyGreatly
Pronunciation🇬🇧 /["/kənˈsɪdərəbli/"]/🇺🇸 /["/kənˈsɪdərəbli/"]/🇬🇧 /["/ˈɡreɪtli/"]/🇺🇸 /["/ˈɡreɪtli/"]/
MeaningA lot; to a great extent.a lot or very much
ExampleThe need for sleep varies considerably from person to person.People's reaction to the film has varied greatly.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)
CEFR levelB2B2
Part of speechadverbadverb
Collocationsconsiderably higher, considerably lower, considerably improved, considerably more, considerably bettergreatly improve, greatly appreciate, greatly enhance, greatly affect
Antonymsslightly, marginally, insignificantly, minimallyslightly, partially, minimally
Common mistakesConfusing with 'consider' which means to think about something., Using 'considerably' without an adjective/adverb to modify., Misplacing 'considerably' in a sentence, affecting the meaning.Using 'greatly' incorrectly with nouns instead of verbs or adjectives., Confusing 'greatly' with 'great' as an adjective., Overusing 'greatly' in informal settings.
Usage notesUse 'considerably' in more formal contexts, such as reports or academic writing. It may not be suitable for very casual conversations.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.

Frequently asked questions: Considerably vs Greatly

What's the difference between Considerably and Greatly?

Considerably: A lot; to a great extent. Greatly: a lot or very much

Which is more common: Considerably and Greatly?

Considerably is the most common in everyday English.

Are Considerably and Greatly the same CEFR level?

Considerably: B2, Greatly: B2 on the CEFR scale.

Can I use Considerably and Greatly interchangeably?

Not always. Considerably and Greatly 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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