a performer who learns another's part in order to be able to act as a replacement at short notice

a person who is waiting in line to take over someone else's job or role

प्रतिस्थापन लेने वाला व्यक्ति

English Usage: "He saw himself as an understudy to the CEO, learning the ropes."

Hindi Usage: "उसने खुद को सीईओ का प्रतिस्थापन मानते हुए देखा, जो काम सीख रहा था।"