too excited► overexcited someone, especially a child, who is overexcited has become too excited to behave calmly: · The kids are getting overexcited and won't go to sleep.· "Does it bite?" asked one of an overexcited group of boys.
► hysterical unable to stop shouting, crying etc because you are extremely excited: · Hysterical fans tried to stop Damon's car at the airport.· He got a hysterical phone call from his mother in the middle of the night.get/go hysterical (=become hysterical): · The crowd went hysterical as Juventus scored in the last minute of the game.
► in a frenzy in a state of great and uncontrollable excitement: · There are just two minutes to go of this game, and the crowd is in an absolute frenzy.work yourself into a frenzy (=become more and more excited until you are in a frenzy): · Supporters of Hodge have worked themselves into a frenzy over the latest polls.
► excitable someone who is excitable gets excited too easily: · Puppies are naturally affectionate and excitable.highly excitable (=very excitable): · On my first day's teaching, I had a class of highly excitable 5-year-olds.
► hyper spoken too excited and too full of energy, so that you do not feel comfortable: · The kids are really hyper today - I think I'm going to send them outside.get hyper: · Sometimes he gets so hyper you can't talk to him.
someone who is overexcited is very excited and not behaving sensibly: 
Some of the boys became overexcited.