Anxious (adjective)

1. Feeling or showing worry, nervousness, or unease about something with an uncertain outcome.
2. Eager or keen.

Origin:

From the latin word "anxius" meaning "full of anxiety".

Examples:

1. She felt anxious about the upcoming exam.
2. He was anxious about the meeting with the boss.
3. The patient was anxious about the surgery.
4. She was anxious to hear the news.
5. He was anxious to start the new project.