Synonyms of substitution

Noun

1. substitution, permutation, transposition, replacement, switch, variation, fluctuation

usage: an event in which one thing is substituted for another; "the replacement of lost blood by a transfusion of donor blood"

2. substitution, exchange, commutation, change

usage: the act of putting one thing or person in the place of another: "he sent Smith in for Jones but the substitution came too late to help"