From Longman Dictionary of Contemporary Englishkeyed upˌkeyed ˈup adjective [not before noun] WORRIEDEXCITEDworried or excitedkeyed up with/about/at Travis was keyed up at the thought of seeing Rosie again.
Examples from the Corpus
keyed up with/about/at• I remember being so keyed up with adrenaline that I wanted to go back in, regardless.• Then one night Travis arrived, keyed up at the thought of seeing Rosemary again. 