1. (imp. & p. p.) of Substitute.

2. (a.) Exchanged; put in the place of another.

3. (a.) Containing substitutions or replacements; having been subjected to the process of substitution, or having some of its parts replaced; as, alcohol is a substituted water; methyl amine is a substituted ammonia.

alternate alternative assigned backup commissioned counterfeit delegated dummy equivalent ersatz fake imitation indirect makeshift mock phony pinch provisional proxy reserve secondary spare stopgap substitute substituted surrogate temporary tentative token utility