(だいやく)

だいやく
noun
stand-in; substitute; understudy
1. stand-in; substitute; understudy
A person who takes someone else's place, especially in a performance, role, or duty. Originally a theater term for an understudy, now used broadly.
代役(だいやく)(つと)める。
To serve as a stand-in.
急病(きゅうびょう)主演(しゅえん)()わって代役(だいやく)舞台(ぶたい)()った。
A stand-in took the stage in place of the lead actor who fell suddenly ill.
部長(ぶちょう)出張中(しゅっちょうちゅう)なので、今日(きょう)会議(かいぎ)(わたし)代役(だいやく)()たします。
Since the department head is on a business trip, I'll fill in for today's meeting.

Composed of (だい) (substitute, in place of) + (やく) (role). Originally from the world of theater and performing arts, now widely used in business and everyday contexts.

COMMON COLLOCATIONS:

  • 代役(だいやく)(つと)める: to serve as a stand-in
  • 代役(だいやく)()たす: to fulfill the role of a substitute
  • 代役(だいやく)()てる: to put up a substitute
  • 代役(だいやく)として: as a substitute

SIMILAR WORDS:

  • 代理(だいり): proxy, representative — more formal; used for official delegation of authority
  • 代打(だいだ): pinch hitter — specifically a baseball term for a substitute batter
  • (ひか)え: reserve, backup — a person on standby; less specific about actually performing the role
  • 身代(みが)わり: body double, scapegoat — taking someone's place, often to protect them or take blame

USAGE:
While originally a performing arts term, 代役(だいやく) is now commonly used in business settings. It carries no negative connotation — stepping in as a 代役(だいやく) is seen as responsible and helpful.