be keyed up about (something)
To be excited, nervous, or anxious about something. I'm so keyed up about the concert tomorrow. There's no way I'm going to be able to fall asleep! I can tell Ben is keyed up about having to give his speech in front of the entire school, so I'm trying to help him calm his nerves. Carrie was really keyed up about her test results, but it turns out everything's fine.
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