Hyper (adjective)

1. Excessively energetic, excitable, or overstimulated.
2. Exaggerated or extreme in behavior, tone, or language.
3. Relating to or affected by hyperactivity or hyperthyroidism.

Origin:

From greek 'huper' ('above, beyond').

Examples:

1. The hyper child couldn't sit still in class.
2. Her hyper personality made her the life of the party.
3. The patient was diagnosed with hyperthyroidism.