Chipper (adjective)

1. Being in a good and lively mood.
2. Being energetic and optimistic.
3. Having a cheerful and upbeat tone or manner.

Origin:

Derived from the verb "chip" meaning to make small cuts or nicks in.

Examples:

1. She was chipper as she greeted her friends at the party.
2. He was feeling chipper after his morning run.
3. The chipper bird sang loudly in the tree.
4. The chipper customer service representative helped solve his problem.
5. She was chipper even though she had a long day ahead of her.