Eager vs Enthusiastic vs Keen

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

Eager

Top 2,000 (common)C1adjective

Enthusiastic

Top 2,000 (common)B2adjective

Keen

Top 2,000 (common)B1adjective
 EagerEnthusiasticKeen
Pronunciation🇬🇧 /["/ˈiːɡə(r)/"]/🇺🇸 /["/ˈiːɡər/"]/🇬🇧 /["/ɪnˌθjuːziˈæstɪk/"]/🇺🇸 /["/ɪnˌθuːziˈæstɪk/"]/🇬🇧 //kiːn//🇺🇸 //kin//
Meaningvery excited and wanting something a lotshowing a lot of excitement and interestVery eager or enthusiastic about something.
Exampleeager crowds outside the stadiumShe was enthusiastic about the new project and shared her ideas with the team.She is keen to learn new languages.
RegisterNeutralNeutralNeutral
How commonTop 2,000 (common)Top 2,000 (common)Top 2,000 (common)
CEFR levelC1B2B1
Part of speechadjectiveadjectiveadjective
Collocationsappear, be, look, extremely, only too, really, forbe, feel, look, extremely, fairly, very, about, inkeen interest, keen observer, keen eye
Antonymsreluctant, apathetic, indifferent, unenthusiasticapathetic, indifferent, disinterestedapathetic, 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.Confused with 'enthusiasm' (the noun form) and 'enthusiastic' (the adjective form), Using it in a negative context, where it doesn't fit, Incorrectly pluralizing it, e.g., 'enthusiastics''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 'enthusiastic' to describe someone's strong positive feelings about something. Appropriate in both casual and formal contexts, but avoid it in overly serious discussions.Use 'keen' to express interest or enthusiasm. Often used in informal contexts, but also appropriate in formal writing.

See it in real clips

Keen

Frequently asked questions: Eager vs Enthusiastic vs Keen

What's the difference between Eager, Enthusiastic, and Keen?

Eager: very excited and wanting something a lot Enthusiastic: showing a lot of excitement and interest Keen: Very eager or enthusiastic about something.

Which is more advanced: Eager, Enthusiastic, and Keen?

Eager is the highest level, at C1, on the CEFR scale.

Are Eager, Enthusiastic, and Keen the same CEFR level?

Eager: C1, Enthusiastic: B2, Keen: B1 on the CEFR scale.

What part of speech are Eager, Enthusiastic, and Keen?

Eager: adjective, Enthusiastic: adjective, Keen: adjective.

Can you show an example of each?

Eager: eager crowds outside the stadium Enthusiastic: She was enthusiastic about the new project and shared her ideas with the team. Keen: She is keen to learn new languages.

Can I use Eager, Enthusiastic, and Keen interchangeably?

Not always. Eager, Enthusiastic, 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.

Related comparisons