Eager vs Keen

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

Eager

Top 2,000 (common)C1adjective

Keen

Top 2,000 (common)B1adjective
 EagerKeen
Pronunciation🇬🇧 /["/ˈiːɡə(r)/"]/🇺🇸 /["/ˈiːɡər/"]/🇬🇧 //kiːn//🇺🇸 //kin//
Meaningvery excited and wanting something a lotVery eager or enthusiastic about something.
Exampleeager crowds outside the stadiumShe is keen to learn new languages.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 2,000 (common)
CEFR levelC1B1
Part of speechadjectiveadjective
Collocationsappear, be, look, extremely, only too, really, forkeen interest, keen observer, keen eye
Antonymsreluctant, apathetic, indifferent, unenthusiasticapathetic, indifferent, uninterested
Common mistakesConfused with 'anxious', thinking they mean the same thing., 'Eager' is not used with a noun directly; learners sometimes say 'eager student' instead of 'eager to learn'., Using 'eager' in negative contexts incorrectly.'Keen' is often confused with 'keen to', which should only be used for expressing desire., Learners sometimes use 'keen' as a noun instead of an adjective., Often incorrectly used without a specific object, e.g., 'I am keen' should be 'I am keen on cooking.'
Usage notesUse 'eager' when someone is enthusiastic about doing something. Avoid in overly formal situations; instead, use 'enthusiastic'.Use 'keen' to express interest or enthusiasm. Often used in informal contexts, but also appropriate in formal writing.

Frequently asked questions: Eager vs Keen

What's the difference between Eager and Keen?

Eager: very excited and wanting something a lot Keen: Very eager or enthusiastic about something.

Are Eager and Keen the same CEFR level?

Eager: C1, Keen: B1 on the CEFR scale.

Can I use Eager and Keen interchangeably?

Not always. Eager and Keen 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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