Lengua inglesa
noun someone or something that takes the place of, or is used instead of, another.
as adjective a substitute teacher .
verb (substituted , substituting ) (usu substitute something for something else) to use or bring something into use as an alternative, replacement, etc for something else.
[15c: from sub- (sense 1) + Latin statuere to set]
substitutability noun .
substitutable adjective .
substitution noun .
substitutional or substitutionary adjective .
substitutive adjective .
substitutively adverb .

substitute There is often confusion about which prepositions to use with substitute and replace. If X is put in place of Y, X is substituted for Y or replaces Y, and Y is replaced by or replaced with X.

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