Looking for the meaning or definition of the word substitute? Here's what it means.
Verb
(transitive) To use in place of something else, with the same function.
(transitive) In the phrase "substitute X for Y", to use X in place of Y. With increasing frequency used in the semantically opposite sense (see the OED's notes).
(transitive) In the phrase "substitute X with/by Y", to use Y in place of X; to replace X with Y
(transitive, sports) To remove (a player) from the field of play and bring on another in his place.
(intransitive) To serve as a replacement (for someone or something)
Noun
A replacement or stand-in for something that achieves a similar result or purpose.
(sports) A player who is available to replace another if the need arises, and who may or may not actually do so.
