What is another word for Indefectibility?
Pronunciation: [ˌɪndɪfˌɛktɪbˈɪlɪti] (IPA) 
Indefectibility is a term used in theology to describe the attribute of a church or a religious institution that is said to be "incapable of failing." While this term has its own specific meaning, there are a number of synonyms that one can use to refer to this quality. These might include terms such as "unfailing," "invincible," "indestructible," or "immortal." Other potential synonyms might include words like "unyielding," "unwavering," or "unshakeable." Ultimately, the use of any of these terms can help to convey the idea of an institution or organization that is believed to be infallible or unerringly reliable.
