upstage
adverb
on or toward the back of the stage.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
“You can tell by the quality of the laughter that a raccoon is upstaging you,” said Stoll, who glanced at the raccoon but did not acknowledge it.
From Los Angeles Times ● Aug. 9, 2018