keying up

Verb

key up (third-person singular simple present keys up, present participle keying up, simple past and past participle keyed up)

1. (transitive) To raise (the whole ring of an arch) off its centering, by driving in the keystone forcibly.
2. (transitive) To raise the pitch of.
3. (figuratively, transitive) To produce nervous tension in (someone).
4. (figuratively, transitive) To raise the intensity, excitement, tension, etc., of.

   Antonyms:

   key down