Eager

adjective

1. Intellectually alert having or characteristic of a quick penetrating mind

   "a keen student"

2. Extremely sensitive in perception

   "keen eyes"

3. Sharply contested

   "keen competition"

4. Intense

   "the keen delight in the chase"

5. Wonderful, excellent

   "a keen idea"

6. Having a fine edge or point sharp

   "a knife with a keen blade"

7. Affecting one as if by cutting

   "keen sarcasm"

8. Pungent to the sense

   "a keen scent"

verb

1. To make a loud and long cry of sorrow to lament with a keen
2. To make a sound suggestive of a loud cry of sorrow

   "a keening siren"

3. To lament, mourn, or complain loudly
4. To utter with a loud wailing voice or wordless cry

   "keened our sorrow"

noun

1. A lamentation for the dead uttered in a loud wailing voice or sometimes in a wordless cry

noun

1. A very strong ability to understand and appreciate something heard

   "She has a keen ear for languages and learns new ones easily."

adjective

1. Peachy

idiom

1. Very excited and interested very enthusiastic

   "I gave him the job because he was willing to learn and seemed as keen as mustard."

idiom

1. Very excited about and interested in (something)

   "He's mad keen on golf."

noun

1. A special ability to recognize a particular thing or quality

   "He has a keen eye for details."

noun

1. A special ability to notice or recognize a particular thing or quality

   "He has a keen/sharp eye for detail."