Constantly vs Frequently

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

Constantly

Top 2,000 (common)B2adverb

Frequently

Top 1,000 (very common)B1adverb
Most common: Frequently
 ConstantlyFrequently
Pronunciation🇬🇧 /["/ˈkɒnstəntli/"]/🇺🇸 /["/ˈkɑːnstəntli/"]/🇬🇧 /["/ˈfriːkwəntli/"]/🇺🇸 /["/ˈfriːkwəntli/"]/
Meaningalways happening without stoppinghappens often
ExampleFashion is **constantly changing**.Buses run frequently between the city and the airport.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 1,000 (very common)
CEFR levelB2B1
Part of speechadverbadverb
Collocationsconstantly improving, constantly changing, constantly worried, constantly movingfrequently asked questions, frequently used, frequently occurring, frequently visit, frequently travel
Antonymsoccasionally, seldom, rarelyseldom, rarely, infrequently
Common mistakesConfusing 'constantly' with 'frequently', which implies less regularity., Using it to describe a one-time action, like 'I constantly finished my homework yesterday.', Incorrectly placing it at the end of a sentence for emphasis.Often confused with 'occasionally' which implies less frequency., Misplaced emphasis when used in phrases, e.g., 'I frequently did' instead of 'I did frequently.', Using 'frequently' in contexts where 'always' or 'never' would be more suitable.
Usage notesUse 'constantly' in neutral contexts to describe actions that occur regularly or continuously. It's suitable for both spoken and written English but avoid in overly formal writing.Use 'frequently' in both written and spoken contexts to indicate a high frequency of occurrence. It's appropriate in formal writing but can also be used informally. Avoid using in very casual contexts where slang or simpler terms are more natural.

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Constantly

Frequently asked questions: Constantly vs Frequently

What's the difference between Constantly and Frequently?

Constantly: always happening without stopping Frequently: happens often

Which is more common: Constantly and Frequently?

Frequently is the most common in everyday English.

Which is more advanced: Constantly and Frequently?

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

Are Constantly and Frequently the same CEFR level?

Constantly: B2, Frequently: B1 on the CEFR scale.

What part of speech are Constantly and Frequently?

Constantly: adverb, Frequently: adverb.

Can you show an example of each?

Constantly: Fashion is **constantly changing**. Frequently: Buses run frequently between the city and the airport.

Can I use Constantly and Frequently interchangeably?

Not always. Constantly and Frequently 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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