Enough vs Sufficiently

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

Enough

Top 1,000 (very common)A1determiner

Sufficiently

FormalTop 5,000 (fairly common)B2adverb
Most formal: SufficientlyMost common: Enough
 EnoughSufficiently
Pronunciation🇬🇧 /["/ɪˈnʌf/"]/🇺🇸 /["/ɪˈnʌf/"]/🇬🇧 /["/səˈfɪʃntli/"]/🇺🇸 /["/səˈfɪʃntli/"]/
Meaningsufficient or adequate amountenough; to a degree that is acceptable
ExampleHave you made enough copies?The following day she felt sufficiently well to go to work.
RegisterNeutralFormal
How commonTop 1,000 (very common)Top 5,000 (fairly common)
CEFR levelA1B2
Part of speechdetermineradverb
Collocationsenough time, enough space, enough money, enough information, good enoughsufficiently clear, sufficiently large, sufficiently qualified
Antonymsnot enough, insufficient, inadequateinsufficiently, inadequately
Common mistakesUsing 'enough' before verbs (e.g., 'enough eat') instead of after (e.g., 'eat enough'), Confusing 'enough' with 'too' (e.g., 'too much' means excessive), Incorrectly placing 'enough' in the sentence (e.g., 'I have money enough' instead of 'I have enough money')Confusing with 'sufficient', which is an adjective., Using in informal settings where simpler terms like 'enough' are more appropriate., Misplacing in sentences, leading to awkward constructions.
Usage notesUse 'enough' to indicate that something is adequate. Avoid in overly formal writing. 'Enough' can modify nouns or adjectives.Often used in formal contexts, such as academic writing or official reports. It might not be appropriate for casual conversations.

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Enough
Sufficiently

Frequently asked questions: Enough vs Sufficiently

What's the difference between Enough and Sufficiently?

Enough: sufficient or adequate amount Sufficiently: enough; to a degree that is acceptable

Which is more formal: Enough and Sufficiently?

Sufficiently is the most formal of these.

Which is more common: Enough and Sufficiently?

Enough is the most common in everyday English.

Which is more advanced: Enough and Sufficiently?

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

Are Enough and Sufficiently the same CEFR level?

Enough: A1, Sufficiently: B2 on the CEFR scale.

What part of speech are Enough and Sufficiently?

Enough: determiner, Sufficiently: adverb.

Can you show an example of each?

Enough: Have you made enough copies? Sufficiently: The following day she felt sufficiently well to go to work.

Can I use Enough and Sufficiently interchangeably?

Not always. Enough and Sufficiently 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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