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.
He seems to have been a true believer who needed to give himself, heart and soul, to something.
From The Wall Street Journal • Apr. 3, 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
Whether or not Altman is a true believer in A.I.’s equalizing powers, he’s talking his book.
From Slate • Feb. 10, 2026
But what matters for Fed independence is that Hassett is a true believer in it, says Harris, the Fed watcher.
From Barron's • Dec. 11, 2025
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
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.