Vainglorious a. : Feeling or indicating vainglory; elated by vanity; boastful.

Example:
Which religion is the most Vainglorious in your opinion?

Taxonomy
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Defination from the web:
vainglorious from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games. ... Learn more about "vainglorious" and related topics at Britannica.com. Pronunciation Symbols. Share this entry: Link to this page: Cite this ...