Manic (adjective)

1. Having or characterized by excessive energy, enthusiasm, or intensity.
2. Suffering from mania, a symptom of bipolar disorder, characterized by episodes of excessive excitement, energy, and activity.

Origin:

The word "manic" originated in the early 17th century from the latin word "manicus" which means "of the hand" and later was used to describe the excessive activity and energy of mania, a symptom of bipolar disorder.

Examples:

1. She was in a manic state and couldn't sit still.
2. He was manic about getting the project done on time.
3. The patient was experiencing manic symptoms.
4. The manic energy of the crowd was electric.
5. He had a manic episode and was hospitalized.