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Excited, nervous, or anxious. I'm so keyed up after that concert that there's no way I'm going to be able to fall asleep. Ben gets a little keyed up before he goes on stage, but once he's out there, he's completely in control.
*keyed up (about something)and *keyed up (over something)
to be excited or anxious. (*Typically: be ~; get ~.) Why are you so keyed up about nothing? She is keyed up over her son's health.
1. mod. nervous; anxious. Sally was a little keyed up before the meet.
2. and keyed up to the roof mod. alcohol or drug intoxicated. He was a mite keyed, but still technically sober. Tipsy, hell! I’d say keyed up to the roof!