very happy and enthusiastic because something good is going to happen, especially when this makes you unable to relaxI was so excited I couldn’t sleep.
excited about: I’m so excited about the trip!
excited by: Excited by the news, Marie phoned her mother immediately.
get/become excited: They’re both getting excited planning the wedding.
excited at: He’s excited at the prospect of showing his work in New York.
excited for: Are you excited for your trip to Italy?