1. understudy - Noun
2. understudy - Verb
To study, as another actor's part, in order to be his substitute in an emergency; to study another actor's part.
One who studies another's part with a view to assuming it in an emergency.
Source: Webster's dictionaryHis android understudy, Antepenultiman, thinks he knows the answer! Source: Internet
Replacements in this tour included Jason Raize as Pontius Pilate and Simone as the Maid by the Fire and understudy for Mary. Source: Internet
Higham (2004) p. 9. Hepburn in the role that brought her to the attention of Hollywood, 1932's The Warrior's Husband Knopf decided to produce The Big Pond in New York and appointed Hepburn the understudy to the leading lady. Source: Internet
Eldred would instead understudy for Valjean on Broadway for the show’s closing performances after around 14 years of dominating New York’s famous marquee. Source: Internet
Sinclair student interpreters are Chelsey Presson, Erica Smith and Amy Ferguson (understudy). Source: Internet
Timothy Hughes (chorus member, Hades understudy, I remember we had a cast meeting about health and safety where we decided not to do the stage door anymore. Source: Internet