substitute
[ˈsʌbstəˌtuːt]
1
substitute
noun
- a person or thing that takes the place of someone or something else —often + for
- a player who takes the place of another player during a game
- substitute teacher
2
substitute
verb
- to put or use (someone or something) in place of someone or something else —often + for
- to do the job of someone else or serve the function of something else —often + for
- to replace (one person or thing) with another —often used as (be) substituted
