Oxford Dictionary English understudy nounnoun BrE BrE//ˈʌndəstʌdi// ; NAmE NAmE//ˈʌndərstʌdi// People in theatre Add to my wordlistjump to other results(pl. understudies) understudy (to somebody) an actor who learns the part of another actor in a play so that they can play that part if necessary She worked as an understudy to Elaine Page. Wordfinderactoractor, audition, body double, cameo, cast, play, role, star, stuntman, understudy See related entries: People in theatreSee understudy in the Oxford Advanced American DictionaryCheck pronunciation: understudy oxfordlearnersdictionaries.com