Noun

• S: (n) understudy, standby (an actor able to replace a regular performer when required)
• direct hypernym / inherited hypernym / sister term
• S: (n) actor, histrion, player, thespian, role player (a theatrical performer)
• S: (n) performer, performing artist (an entertainer who performs a dramatic or musical work for an audience)
• S: (n) entertainer (a person who tries to please or amuse)
• S: (n) person, individual, someone, somebody, mortal, soul (a human being) "there was too much for one person to do"
• S: (n) organism, being (a living thing that has (or can develop) the ability to act or function independently)
• S: (n) living thing, animate thing (a living (or once living) entity)
• S: (n) whole, unit (an assemblage of parts that is regarded as a single entity) "how big is that part compared to the whole?"; "the team is a unit"
• S: (n) object, physical object (a tangible and visible entity; an entity that can cast a shadow) "it was full of rackets, balls and other objects"
• S: (n) physical entity (an entity that has physical existence)
• S: (n) entity (that which is perceived or known or inferred to have its own distinct existence (living or nonliving))
• S: (n) causal agent, cause, causal agency (any entity that produces an effect or is responsible for events or results)
• S: (n) physical entity (an entity that has physical existence)
• S: (n) entity (that which is perceived or known or inferred to have its own distinct existence (living or nonliving))
• derivationally related form
• W: (v) understudy [Related to: understudy] (be an understudy or alternate for a role)
• derivationally related form
• Overview
• S: (n) understudy, standby (an actor able to replace a regular performer when required)
• S: (v) understudy, alternate (be an understudy or alternate for a role)
• synset
• W: (v) stand by [Related to: standby] (be available or ready for a certain function or service)

Verb

• S: (v) understudy, alternate (be an understudy or alternate for a role)
• direct hypernym / inherited hypernym / sister term
• derivationally related form
• sentence frame
• Somebody ----s