When something is exciting, it is full of activity and gets your blood pumping. Anything causing excitement is exciting.
If your heart is racing and you’re thrilled, exhilarated, or jumping up and down with anticipation, something must be exciting. Different people find different things exciting. A close football game is exciting for fans. Being in love is exciting for just about anyone. Learning something new, whether French or juggling, is exciting. An action movie is supposed to be exciting — if it's not, it must not be very good. When you have exciting news, you can't wait to share it.