Adjective

(er)

(obsolete) Sharp; sour; acid.

* Shakespeare

like eager droppings into milk

(obsolete) Sharp; keen; bitter; severe.

* Shakespeare

eager words

* Shakespeare

a nipping and an eager air

(rfc-sense) Excited by desire in the pursuit of any object; ardent to pursue, perform, or obtain; keenly desirous; hotly longing; earnest; zealous; impetuous; vehement.

* Keble

When to her eager lips is brought / Her infant's thrilling kiss.

* Hawthorne

a crowd of eager and curious schoolboys

* {{quote-book, year=1963, author=(Margery Allingham), title=(The China Governess)

, chapter=19 citation , passage=When Timothy and Julia hurried up the staircase to the bedroom floor, where a considerable commotion was taking place, Tim took Barry Leach with him. […]. The captive made no resistance and came not only quietly but in a series of eager little rushes like a timid dog on a choke chain.}}

Brittle; inflexible; not ductile.

* John Locke

Gold will be sometimes so eager , as artists call it, that it will as little endure the hammer as glass itself.

(comptheory) Not employing lazy evaluation; calculating results immediately, rather than deferring calculation until they are required.

an eager algorithm

Adjective

(er)

showing a quick and ardent willingness or responsiveness, enthusiastic, eager; interested, intense.

vehement; fierce; as, a keen appetite.

* (rfdate),

Of full keen will.

* (rfdate), Shakespeare

So keen and greedy to confound a man.

sharp; having a fine edge or point.

* (rfdate) :

That my keen knife see not the wound it makes.

acute of mind; sharp; penetrating; having or expressing mental acuteness.

* (rfdate),

To make our wits more keen .

* (rfdate),

Before the keen inquiry of her thought.

bitter; piercing; acrimonious; cutting; stinging; severe; as, keen satire or sarcasm.

* (rfdate)

Good father cardinal, cry thou amen to my keen curses.

piercing; penetrating; cutting; sharp; -- applied to cold, wind, etc,; as, a keen wind; the cold is very keen.

* (rfdate),

Breasts the keen air, and carols as he goes.

Enthusiastic

I'm keen to learn another language.

I'm keen on learning another language.

I'm keen on languages.

I'm keen about learning languages.

I'm keen for help.

''"Do you want to learn another language?" / "I'm keen ."

(US, informal, dated) Marvelous.

I just got this peachy keen new dress.

(UK) extremely low as to be competitive.

keen prices

(obsolete) brave, courageous; bold, audacious.