Definition of understudy
- one who is prepared to act another's part or take over another's duties
Usage examples of understudy
The understudy knew every line of the lead role in case the main actor became sick before the performance.
When the department head resigned suddenly, her understudy took over the duties until a permanent replacement was hired.
He spent months as an understudy, rehearsing the part even though he might never appear on stage.