noun
a small metal instrument specially cut to fit into a lock and move its bolt
verb
to make someone or something more excited or nervous
adverb
in a way that increases excitement or nervousness
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Before playing the piano, make sure to key up by stretching your fingers and wrists.
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I always key up before a big game by listening to my favorite pump-up playlist.
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Let's key up before hitting the club tonight with some pre-game shots!
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The team needs to key up their defense if they want to win the championship.