(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.

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.

simple past tense and past participle of substitute

plural of substitute

Third-person singular simple present indicative form of substitute

plural of substituter

Alternative form of substitutor

The act of substituting or the state of being substituted. / A substitute or replacement.

Capable of being used as a substitute; valid as a replacement or alternate item. / Capable of being substituted.

Something that can be substituted for something else; a viable replacement.