What is another word for superseder?
Pronunciation: [sˈuːpəsˌɛdə] (IPA) 
The word "superseder" refers to someone or something that replaces or supersedes something else. Synonyms for this word include substitute, replacement, successor, heir, surrogate, backup, understudy, and alternative. Each of these words indicates that there is another entity available that can take the place of the original. They also suggest varying degrees of similarity to the original - for example, a substitute may be very similar, whereas an alternative may be quite different. Whatever term is used, the underlying idea is that there is a new occupant of a position or role that was previously held by someone or something else.
