substitute for

(redirected from substitute for else)

substitute for someone or something

to serve as a replacement for someone or something. I have to substitute for Roger at work this weekend. Do you think that this will substitute for the one you wanted?
See also: substitute

substitute someone for (someone else)

 and substitute something for something else
to exchange someone or something for someone or something else; to replace someone or something with someone or something else. Shall I substitute Fred for Mary in the front office? Please substitute fish for beef on my dinner order.
See also: substitute