Dictionary & Thesaurus

1.

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

Synonyms: exchange

Related Words: ablactation, change, commutation, replacement, replacing, weaning

2.

(noun) an event in which one thing is substituted for another

Synonyms: permutation, replacement, switch, transposition

Related Words: fluctuation, variation