Enthusiastic (adjective)

1. Having or showing great excitement for or interest in a subject or cause.
2. Showing a feeling of energetic and active interest in something.

Origin:

From ancient greek ἐνθουσιαστής (enthousiastēs, "inspired, possessed by a god, enthusiastic"), from ἐν (en, "in") + θεός (theos, "god") + -ιαστής (-iastēs, "performer").

Examples:

1. He was enthusiastic about the project.
2. She was enthusiastic about learning.
3. The crowd was enthusiastic about the game.
4. The children were enthusiastic about playing.
5. The team was enthusiastic about the competition.