Eager

adj.energetic, hopefuleveryday

What it means

Looks forward to participating and is ready to begin.

Reach for it when praising enthusiastic readiness to learn, help, or take part

The eager apprentices arrived with questions and volunteered for the first demonstration.

playful
raring
when informal language should convey barely contained readiness
not when The exuberant idiom belongs in chatty praise and will jar in resumes, formal cards, or measured recommendations.
everyday
keen
when strong interest is present but the tone should stay measured
not when In American writing it can sound less natural, and it does not always imply immediate readiness.
everyday
ready
when preparation and immediate availability matter
not when A person can be prepared without wanting the task, so this omits the positive appetite.
warm
excited
when happy anticipation is more important than willingness to act
not when Excitement can be passive or short-lived; eager usually points toward participation.
professional
enthusiastic
when visible approval and positive energy are the main qualities
not when Someone may celebrate an idea enthusiastically without being ready to do the work.
professional
motivated
when a goal supplies the reason and energy to act
not when Motivation can be private and disciplined rather than visibly anticipatory.
professional
willing
when consent and openness to help are enough
not when It may signal mere acceptance rather than the active desire conveyed by eager.
formal
avid
when an established, intense interest in an activity is being described
not when Use it for a sustained pursuit such as reading or collecting, not one upcoming chance to help.

eager learner
An eager learner, Caleb asked to repeat the repair under supervision.
eager to help
Eager to help, the new neighbors brought tools before anyone asked.
eager participant
Every eager participant received a small plot in the community garden.

The definition and the example on this page are written here. The dictionaries above ground which meaning is being described, not the wording.