The phrase high-energy is often used to describe someone who is lively, exuberant, and full of energy. There are many synonyms for this term that can be used to describe someone or something that is vibrant and full of vitality. These synonyms include energetic, spirited, lively, dynamic, enthusiastic, and vigorous. Other similar terms include active, animated, bouncy, peppy, and vivacious. Whether you are describing a person, an event, or a performance, using these synonyms for high-energy can add emphasis and excitement to your language. So next time you want to convey the idea of being full of life, try using some of these synonyms instead of the term high-energy.