be keyed up over (something)
To be excited, nervous, or anxious about something. I'm so keyed up over the concert tomorrow. There's no way I'm going to be able to fall asleep! I can tell Ben is keyed up over 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 over her test results, but it turns out everything's fine.
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