true believer
Americannoun
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a person who has been thoroughly convinced of something.
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a fanatic, especially a religious or political one.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
She was a true believer, and colleagues reportedly regarded her with some wariness precisely because of it.
From Salon ● Sep. 5, 2026
At the same, Meta chief Mark Zuckerberg is a true believer in AI.
From The Wall Street Journal ● Jul. 28, 2026
When the last true believer walks out of the church, it is worth asking what he saw on his way to the door.
From MarketWatch ● Jul. 27, 2026
Residents Assn. is as die-hard a true believer as Bastian, and she went on for several minutes about music venues, farmers markets, dining, diversity and the sense of community.
From Los Angeles Times ● Mar. 28, 2026
With the certitude of a true believer, Vellya Paapen had assured the twins that there was no such thing in the world as a black cat.
From "The God of Small Things" by Arundhati Roy
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.