Excitement is a feeling or situation full of activity, joy, exhilaration, or upheaval. One thing about excitement — it sure isn't boring.
There are a few types of excitement, but they're all exciting — they get your attention. If you can't wait for your birthday, you're feeling a happy kind of excitement. If everyone in class is screaming and throwing things, the teacher might ask, "What's all the excitement about?" A sleeping dog is resting — no excitement there. But a dog that’s jumping, barking, and running in circles when his owner comes home is feeling and causing a lot of excitement.