eager

adjective

• Sharp; sour; acid.
• Sharp; keen; bitter; severe.
• Desirous; keen to do or obtain something.

  "I was eager to show my teacher how much I'd learned over the holidays."

• Brittle; inflexible; not ductile.
• Not employing lazy evaluation; calculating results immediately, rather than deferring calculation until they are required.

  "an eager algorithm"