Energetic means full of energy, enthusiasm, and active movement. An energetic person might bound into the room, ready to start the day, while their tired sibling drags themselves to breakfast. An energetic puppy races around the yard, tail wagging, eager to play, while an older dog lounges peacefully in the sun.

The word describes both physical activity and mental attitude. You might attack your homework with energetic focus, working quickly and intently. A soccer player makes energetic runs up and down the field. A teacher might lead an energetic discussion that gets everyone excited about a topic.

Energetic conveys a sense of vigor and vitality, like there's a spark inside driving the action. An energetic performance crackles with life and intensity. When you feel energetic, you're ready to tackle challenges with enthusiasm and determination.

The opposite would be lethargic or sluggish: low on energy, slow-moving, unmotivated. After a good night's sleep and a healthy breakfast, you might feel energetic and ready to face the day. After staying up too late, you feel the opposite.